Hi,

the device id 0ac8:3420 is not in the latest list.
lsusb -v -d 0ac8:3420 shows:
Bus 004 Device 005: ID 0ac8:3420 Z-Star Microelectronics Corp.
Device Descriptor:
     bLength                18
     bDescriptorType         1
     bcdUSB               2.00
     bDeviceClass          239 Miscellaneous Device
     bDeviceSubClass         2 Common Class
     bDeviceProtocol         1 Interface Association
     bMaxPacketSize0        64
     idVendor           0x0ac8 Z-Star Microelectronics Corp.
     idProduct          0x3420
     bcdDevice            1.00
     iManufacturer           1 Vimicro Corp.
     iProduct                2 Venus USB2.0 Camera
     iSerial                 0
     bNumConfigurations      1
     Configuration Descriptor:
       bLength                 9
       bDescriptorType         2
       wTotalLength         1125
       bNumInterfaces          4
       bConfigurationValue     1
       iConfiguration          0
       bmAttributes         0x80
         (Bus Powered)
       MaxPower              128mA
       Interface Association:
         bLength                 8
         bDescriptorType        11
         bFirstInterface         0
         bInterfaceCount         2
         bFunctionClass         14 Video
         bFunctionSubClass       3 Video Interface Collection
         bFunctionProtocol       0
         iFunction               2 Venus USB2.0 Camera
       Interface Descriptor:
         bLength                 9
         bDescriptorType         4
         bInterfaceNumber        0
         bAlternateSetting       0
         bNumEndpoints           1
         bInterfaceClass        14 Video
         bInterfaceSubClass      1 Video Control
         bInterfaceProtocol      0
         iInterface              2 Venus USB2.0 Camera
         VideoControl Interface Descriptor:
           bLength                13
           bDescriptorType        36
           bDescriptorSubtype      1 (HEADER)
           bcdUVC               1.00
           wTotalLength           79
           dwClockFrequency       30.000000MHz
           bInCollection           1
           baInterfaceNr( 0)       1
         VideoControl Interface Descriptor:
           bLength                18
           bDescriptorType        36
           bDescriptorSubtype      2 (INPUT_TERMINAL)
           bTerminalID             1
           wTerminalType      0x0201 Camera Sensor
           bAssocTerminal          0
           iTerminal               0
           wObjectiveFocalLengthMin      0
           wObjectiveFocalLengthMax      0
           wOcularFocalLength            0
           bControlSize                  3
           bmControls           0x0000000a
             Auto-Exposure Mode
             Exposure Time (Absolute)
         VideoControl Interface Descriptor:
           bLength                11
           bDescriptorType        36
           bDescriptorSubtype      5 (PROCESSING_UNIT)
         Warning: Descriptor too short
           bUnitID                 2
           bSourceID               1
           wMaxMultiplier          0
           bControlSize            2
           bmControls     0x0000177b
             Brightness
             Contrast
             Saturation
             Sharpness
             Gamma
             White Balance Temperature
             Backlight Compensation
             Gain
             Power Line Frequency
             White Balance Temperature, Auto
           iProcessing             0
           bmVideoStandards     0x 9
             None
             SECAM - 625/50
         VideoControl Interface Descriptor:
           bLength                 9
           bDescriptorType        36
           bDescriptorSubtype      3 (OUTPUT_TERMINAL)
           bTerminalID             3
           wTerminalType      0x0101 USB Streaming
           bAssocTerminal          0
           bSourceID               2
           iTerminal               0
         VideoControl Interface Descriptor:
           bLength                28
           bDescriptorType        36
           bDescriptorSubtype      6 (EXTENSION_UNIT)
           bUnitID                 4
           guidExtensionCode         {5dc717a9-1941-da11-ae0e-000d56ac7b4c}
           bNumControl             8
           bNrPins                 1
           baSourceID( 0)          1
           bControlSize            3
           bmControls( 0)       0x59
           bmControls( 1)       0x80
           bmControls( 2)       0x80
           iExtension              0
         Endpoint Descriptor:
           bLength                 7
           bDescriptorType         5
           bEndpointAddress     0x81  EP 1 IN
           bmAttributes            3
             Transfer Type            Interrupt
             Synch Type               None
             Usage Type               Data
           wMaxPacketSize     0x000a  1x 10 bytes
           bInterval               5
       Interface Descriptor:
         bLength                 9
         bDescriptorType         4
         bInterfaceNumber        1
         bAlternateSetting       0
         bNumEndpoints           0
         bInterfaceClass        14 Video
         bInterfaceSubClass      2 Video Streaming
         bInterfaceProtocol      0
         iInterface              0
         VideoStreaming Interface Descriptor:
           bLength                            15
           bDescriptorType                    36
           bDescriptorSubtype                  1 (INPUT_HEADER)
           bNumFormarts                        2
           wTotalLength                    33282
           bEndPointAddress                    0
           bmInfo                              3
           bTerminalLink                       2
           bStillCaptureMethod                 1
           bTriggerSupport                     1
           bTriggerUsage                       1
           bControlSize                        1
           bmaControls( 0)                    27
           bmaControls( 1)                    27
         VideoStreaming Interface Descriptor:
           bLength                            27
           bDescriptorType                    36
           bDescriptorSubtype                  4 (FORMAT_UNCOMPRESSED)
           bFormatIndex                        1
           bNumFrameDescriptors                9
           guidFormat
{59555932-0000-1000-8000-00aa00389b71}
           bBitsPerPixel                      16
           bDefaultFrameIndex                  1
           bAspectRatioX                       0
           bAspectRatioY                       0
           bmInterlaceFlags                 0x00
             Interlaced stream or variable: No
             Fields per frame: 1 fields
             Field 1 first: No
             Field pattern: Field 1 only
             bCopyProtect                      0
         VideoStreaming Interface Descriptor:
           bLength                            34
           bDescriptorType                    36
           bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
           bFrameIndex                         1
           bmCapabilities                   0x00
             Still image unsupported
           wWidth                            640
           wHeight                           480
           dwMinBitRate                   768000
           dwMaxBitRate                196608000
           dwMaxVideoFrameBufferSize      614400
           dwDefaultFrameInterval         333333
           bFrameIntervalType                  2
           dwFrameInterval( 0)            333333
           dwFrameInterval( 1)            666667
         VideoStreaming Interface Descriptor:
           bLength                            34
           bDescriptorType                    36
           bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
           bFrameIndex                         2
           bmCapabilities                   0x00
             Still image unsupported
           wWidth                            352
           wHeight                           288
           dwMinBitRate                   768000
           dwMaxBitRate                196608000
           dwMaxVideoFrameBufferSize      202752
           dwDefaultFrameInterval         333333
           bFrameIntervalType                  2
           dwFrameInterval( 0)            333333
           dwFrameInterval( 1)            666667
         VideoStreaming Interface Descriptor:
           bLength                            34
           bDescriptorType                    36
           bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
           bFrameIndex                         3
           bmCapabilities                   0x00
             Still image unsupported
           wWidth                            320
           wHeight                           240
           dwMinBitRate                   768000
           dwMaxBitRate                196608000
           dwMaxVideoFrameBufferSize      153600
           dwDefaultFrameInterval         333333
           bFrameIntervalType                  2
           dwFrameInterval( 0)            333333
           dwFrameInterval( 1)            666667
         VideoStreaming Interface Descriptor:
           bLength                            34
           bDescriptorType                    36
           bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
           bFrameIndex                         4
           bmCapabilities                   0x00
             Still image unsupported
           wWidth                            176
           wHeight                           144
           dwMinBitRate                   768000
           dwMaxBitRate                196608000
           dwMaxVideoFrameBufferSize       50688
           dwDefaultFrameInterval         333333
           bFrameIntervalType                  2
           dwFrameInterval( 0)            333333
           dwFrameInterval( 1)            666667
         VideoStreaming Interface Descriptor:
           bLength                            34
           bDescriptorType                    36
           bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
           bFrameIndex                         5
           bmCapabilities                   0x00
             Still image unsupported
           wWidth                            160
           wHeight                           120
           dwMinBitRate                   768000
           dwMaxBitRate                196608000
           dwMaxVideoFrameBufferSize       38400
           dwDefaultFrameInterval         333333
           bFrameIntervalType                  2
           dwFrameInterval( 0)            333333
           dwFrameInterval( 1)            666667
         VideoStreaming Interface Descriptor:
           bLength                            34
           bDescriptorType                    36
           bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
           bFrameIndex                         6
           bmCapabilities                   0x00
             Still image unsupported
           wWidth                            800
           wHeight                           600
           dwMinBitRate                   768000
           dwMaxBitRate                196608000
           dwMaxVideoFrameBufferSize      960000
           dwDefaultFrameInterval        1000000
           bFrameIntervalType                  2
           dwFrameInterval( 0)           1000000
           dwFrameInterval( 1)           1333333
         VideoStreaming Interface Descriptor:
           bLength                            34
           bDescriptorType                    36
           bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
           bFrameIndex                         7
           bmCapabilities                   0x00
             Still image unsupported
           wWidth                           1280
           wHeight                           960
           dwMinBitRate                   768000
           dwMaxBitRate                196608000
           dwMaxVideoFrameBufferSize     2457600
           dwDefaultFrameInterval        1333333
           bFrameIntervalType                  2
           dwFrameInterval( 0)           1333333
           dwFrameInterval( 1)           2000000
         VideoStreaming Interface Descriptor:
           bLength                            34
           bDescriptorType                    36
           bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
           bFrameIndex                         8
           bmCapabilities                   0x00
             Still image unsupported
           wWidth                           1280
           wHeight                          1024
           dwMinBitRate                   768000
           dwMaxBitRate                196608000
           dwMaxVideoFrameBufferSize     2621440
           dwDefaultFrameInterval        1333333
           bFrameIntervalType                  2
           dwFrameInterval( 0)           1333333
           dwFrameInterval( 1)           2000000
         VideoStreaming Interface Descriptor:
           bLength                            34
           bDescriptorType                    36
           bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
           bFrameIndex                         9
           bmCapabilities                   0x00
             Still image unsupported
           wWidth                           1600
           wHeight                          1200
           dwMinBitRate                   768000
           dwMaxBitRate                196608000
           dwMaxVideoFrameBufferSize     3840000
           dwDefaultFrameInterval        2000000
           bFrameIntervalType                  2
           dwFrameInterval( 0)           2000000
           dwFrameInterval( 1)           4000000
         VideoStreaming Interface Descriptor:
           bLength                            42
           bDescriptorType                    36
           bDescriptorSubtype                  3 (STILL_IMAGE_FRAME)
           bEndpointAddress                    0
           bNumImageSizePatterns               9
           wWidth( 0)                        640
           wHeight( 0)                       480
           wWidth( 1)                        352
           wHeight( 1)                       288
           wWidth( 2)                        320
           wHeight( 2)                       240
           wWidth( 3)                        176
           wHeight( 3)                       144
           wWidth( 4)                        160
           wHeight( 4)                       120
           wWidth( 5)                        800
           wHeight( 5)                       600
           wWidth( 6)                       1280
           wHeight( 6)                       960
           wWidth( 7)                       1280
           wHeight( 7)                      1024
           wWidth( 8)                       1600
           wHeight( 8)                      1200
           bNumCompressionPatterns             9
         VideoStreaming Interface Descriptor:
           bLength                             6
           bDescriptorType                    36
           bDescriptorSubtype                 13 (COLORFORMAT)
           bColorPrimaries                     0 (Unspecified)
           bTransferCharacteristics            0 (Unspecified)
           bMatrixCoefficients                 0 (Unspecified)
         VideoStreaming Interface Descriptor:
           bLength                            11
           bDescriptorType                    36
           bDescriptorSubtype                  6 (FORMAT_MJPEG)
           bFormatIndex                        2
           bNumFrameDescriptors                9
           bFlags                              1
             Fixed-size samples: Yes
           bDefaultFrameIndex                  1
           bAspectRatioX                       0
           bAspectRatioY                       0
           bmInterlaceFlags                 0x00
             Interlaced stream or variable: No
             Fields per frame: 1 fields
             Field 1 first: No
             Field pattern: Field 1 only
             bCopyProtect                      0
         VideoStreaming Interface Descriptor:
           bLength                            34
           bDescriptorType                    36
           bDescriptorSubtype                  7 (FRAME_MJPEG)
           bFrameIndex                         1
           bmCapabilities                   0x00
             Still image unsupported
           wWidth                            640
           wHeight                           480
           dwMinBitRate                   768000
           dwMaxBitRate                196608000
           dwMaxVideoFrameBufferSize      614400
           dwDefaultFrameInterval         666667
           bFrameIntervalType                  2
           dwFrameInterval( 0)            666667
           dwFrameInterval( 1)           1333333
         VideoStreaming Interface Descriptor:
           bLength                            34
           bDescriptorType                    36
           bDescriptorSubtype                  7 (FRAME_MJPEG)
           bFrameIndex                         2
           bmCapabilities                   0x00
             Still image unsupported
           wWidth                            352
           wHeight                           288
           dwMinBitRate                   768000
           dwMaxBitRate                196608000
           dwMaxVideoFrameBufferSize      202752
           dwDefaultFrameInterval         666667
           bFrameIntervalType                  2
           dwFrameInterval( 0)            666667
           dwFrameInterval( 1)           1333333
         VideoStreaming Interface Descriptor:
           bLength                            34
           bDescriptorType                    36
           bDescriptorSubtype                  7 (FRAME_MJPEG)
           bFrameIndex                         3
           bmCapabilities                   0x00
             Still image unsupported
           wWidth                            320
           wHeight                           240
           dwMinBitRate                   768000
           dwMaxBitRate                196608000
           dwMaxVideoFrameBufferSize      153600
           dwDefaultFrameInterval         666667
           bFrameIntervalType                  2
           dwFrameInterval( 0)            666667
           dwFrameInterval( 1)           1333333
         VideoStreaming Interface Descriptor:
           bLength                            34
           bDescriptorType                    36
           bDescriptorSubtype                  7 (FRAME_MJPEG)
           bFrameIndex                         4
           bmCapabilities                   0x00
             Still image unsupported
           wWidth                            176
           wHeight                           144
           dwMinBitRate                   768000
           dwMaxBitRate                196608000
           dwMaxVideoFrameBufferSize       50688
           dwDefaultFrameInterval         666667
           bFrameIntervalType                  2
           dwFrameInterval( 0)            666667
           dwFrameInterval( 1)           1333333
         VideoStreaming Interface Descriptor:
           bLength                            34
           bDescriptorType                    36
           bDescriptorSubtype                  7 (FRAME_MJPEG)
           bFrameIndex                         5
           bmCapabilities                   0x00
             Still image unsupported
           wWidth                            160
           wHeight                           120
           dwMinBitRate                   768000
           dwMaxBitRate                196608000
           dwMaxVideoFrameBufferSize       38400
           dwDefaultFrameInterval         666667
           bFrameIntervalType                  2
           dwFrameInterval( 0)            666667
           dwFrameInterval( 1)           1333333
         VideoStreaming Interface Descriptor:
           bLength                            34
           bDescriptorType                    36
           bDescriptorSubtype                  7 (FRAME_MJPEG)
           bFrameIndex                         6
           bmCapabilities                   0x00
             Still image unsupported
           wWidth                            800
           wHeight                           600
           dwMinBitRate                   768000
           dwMaxBitRate                196608000
           dwMaxVideoFrameBufferSize      960000
           dwDefaultFrameInterval         666667
           bFrameIntervalType                  2
           dwFrameInterval( 0)            666667
           dwFrameInterval( 1)           1333333
         VideoStreaming Interface Descriptor:
           bLength                            34
           bDescriptorType                    36
           bDescriptorSubtype                  7 (FRAME_MJPEG)
           bFrameIndex                         7
           bmCapabilities                   0x00
             Still image unsupported
           wWidth                           1280
           wHeight                           960
           dwMinBitRate                   768000
           dwMaxBitRate                196608000
           dwMaxVideoFrameBufferSize     2457600
           dwDefaultFrameInterval         666667
           bFrameIntervalType                  2
           dwFrameInterval( 0)            666667
           dwFrameInterval( 1)           1333333
         VideoStreaming Interface Descriptor:
           bLength                            34
           bDescriptorType                    36
           bDescriptorSubtype                  7 (FRAME_MJPEG)
           bFrameIndex                         8
           bmCapabilities                   0x00
             Still image unsupported
           wWidth                           1280
           wHeight                          1024
           dwMinBitRate                   768000
           dwMaxBitRate                196608000
           dwMaxVideoFrameBufferSize     2621440
           dwDefaultFrameInterval         666667
           bFrameIntervalType                  2
           dwFrameInterval( 0)            666667
           dwFrameInterval( 1)           1333333
         VideoStreaming Interface Descriptor:
           bLength                            34
           bDescriptorType                    36
           bDescriptorSubtype                  7 (FRAME_MJPEG)
           bFrameIndex                         9
           bmCapabilities                   0x00
             Still image unsupported
           wWidth                           1600
           wHeight                          1200
           dwMinBitRate                   768000
           dwMaxBitRate                196608000
           dwMaxVideoFrameBufferSize     3840000
           dwDefaultFrameInterval         666667
           bFrameIntervalType                  2
           dwFrameInterval( 0)            666667
           dwFrameInterval( 1)           1333333
         VideoStreaming Interface Descriptor:
           bLength                            42
           bDescriptorType                    36
           bDescriptorSubtype                  3 (STILL_IMAGE_FRAME)
           bEndpointAddress                    0
           bNumImageSizePatterns               9
           wWidth( 0)                        640
           wHeight( 0)                       480
           wWidth( 1)                        352
           wHeight( 1)                       288
           wWidth( 2)                        320
           wHeight( 2)                       240
           wWidth( 3)                        176
           wHeight( 3)                       144
           wWidth( 4)                        160
           wHeight( 4)                       120
           wWidth( 5)                        800
           wHeight( 5)                       600
           wWidth( 6)                       1280
           wHeight( 6)                       960
           wWidth( 7)                       1280
           wHeight( 7)                      1024
           wWidth( 8)                       1600
           wHeight( 8)                      1200
           bNumCompressionPatterns             9
         VideoStreaming Interface Descriptor:
           bLength                             6
           bDescriptorType                    36
           bDescriptorSubtype                 13 (COLORFORMAT)
           bColorPrimaries                     0 (Unspecified)
           bTransferCharacteristics            0 (Unspecified)
           bMatrixCoefficients                 0 (Unspecified)
       Interface Descriptor:
         bLength                 9
         bDescriptorType         4
         bInterfaceNumber        1
         bAlternateSetting       1
         bNumEndpoints           1
         bInterfaceClass        14 Video
         bInterfaceSubClass      2 Video Streaming
         bInterfaceProtocol      0
         iInterface              0
         Endpoint Descriptor:
           bLength                 7
           bDescriptorType         5
           bEndpointAddress     0x82  EP 2 IN
           bmAttributes            5
             Transfer Type            Isochronous
             Synch Type               Asynchronous
             Usage Type               Data
           wMaxPacketSize     0x0080  1x 128 bytes
           bInterval               1
       Interface Descriptor:
         bLength                 9
         bDescriptorType         4
         bInterfaceNumber        1
         bAlternateSetting       2
         bNumEndpoints           1
         bInterfaceClass        14 Video
         bInterfaceSubClass      2 Video Streaming
         bInterfaceProtocol      0
         iInterface              0
         Endpoint Descriptor:
           bLength                 7
           bDescriptorType         5
           bEndpointAddress     0x82  EP 2 IN
           bmAttributes            5
             Transfer Type            Isochronous
             Synch Type               Asynchronous
             Usage Type               Data
           wMaxPacketSize     0x0200  1x 512 bytes
           bInterval               1
       Interface Descriptor:
         bLength                 9
         bDescriptorType         4
         bInterfaceNumber        1
         bAlternateSetting       3
         bNumEndpoints           1
         bInterfaceClass        14 Video
         bInterfaceSubClass      2 Video Streaming
         bInterfaceProtocol      0
         iInterface              0
         Endpoint Descriptor:
           bLength                 7
           bDescriptorType         5
           bEndpointAddress     0x82  EP 2 IN
           bmAttributes            5
             Transfer Type            Isochronous
             Synch Type               Asynchronous
             Usage Type               Data
           wMaxPacketSize     0x0400  1x 0 bytes
           bInterval               1
       Interface Descriptor:
         bLength                 9
         bDescriptorType         4
         bInterfaceNumber        1
         bAlternateSetting       4
         bNumEndpoints           1
         bInterfaceClass        14 Video
         bInterfaceSubClass      2 Video Streaming
         bInterfaceProtocol      0
         iInterface              0
         Endpoint Descriptor:
           bLength                 7
           bDescriptorType         5
           bEndpointAddress     0x82  EP 2 IN
           bmAttributes            5
             Transfer Type            Isochronous
             Synch Type               Asynchronous
             Usage Type               Data
           wMaxPacketSize     0x0b00  2x 768 bytes
           bInterval               1
       Interface Descriptor:
         bLength                 9
         bDescriptorType         4
         bInterfaceNumber        1
         bAlternateSetting       5
         bNumEndpoints           1
         bInterfaceClass        14 Video
         bInterfaceSubClass      2 Video Streaming
         bInterfaceProtocol      0
         iInterface              0
         Endpoint Descriptor:
           bLength                 7
           bDescriptorType         5
           bEndpointAddress     0x82  EP 2 IN
           bmAttributes            5
             Transfer Type            Isochronous
             Synch Type               Asynchronous
             Usage Type               Data
           wMaxPacketSize     0x0c00  2x 0 bytes
           bInterval               1
       Interface Descriptor:
         bLength                 9
         bDescriptorType         4
         bInterfaceNumber        1
         bAlternateSetting       6
         bNumEndpoints           1
         bInterfaceClass        14 Video
         bInterfaceSubClass      2 Video Streaming
         bInterfaceProtocol      0
         iInterface              0
         Endpoint Descriptor:
           bLength                 7
           bDescriptorType         5
           bEndpointAddress     0x82  EP 2 IN
           bmAttributes            5
             Transfer Type            Isochronous
             Synch Type               Asynchronous
             Usage Type               Data
           wMaxPacketSize     0x1380  3x 896 bytes
           bInterval               1
       Interface Descriptor:
         bLength                 9
         bDescriptorType         4
         bInterfaceNumber        1
         bAlternateSetting       7
         bNumEndpoints           1
         bInterfaceClass        14 Video
         bInterfaceSubClass      2 Video Streaming
         bInterfaceProtocol      0
         iInterface              0
         Endpoint Descriptor:
           bLength                 7
           bDescriptorType         5
           bEndpointAddress     0x82  EP 2 IN
           bmAttributes            5
             Transfer Type            Isochronous
             Synch Type               Asynchronous
             Usage Type               Data
           wMaxPacketSize     0x1400  3x 0 bytes
           bInterval               1
       Interface Association:
         bLength                 8
         bDescriptorType        11
         bFirstInterface         2
         bInterfaceCount         2
         bFunctionClass          1 Audio
         bFunctionSubClass       2 Streaming
         bFunctionProtocol       0
         iFunction               0
       Interface Descriptor:
         bLength                 9
         bDescriptorType         4
         bInterfaceNumber        2
         bAlternateSetting       0
         bNumEndpoints           0
         bInterfaceClass         1 Audio
         bInterfaceSubClass      1 Control Device
         bInterfaceProtocol      0
         iInterface              0
         AudioControl Interface Descriptor:
           bLength                 9
           bDescriptorType        36
           bDescriptorSubtype      1 (HEADER)
           bcdADC               1.00
           wTotalLength           39
           bInCollection           1
           baInterfaceNr( 0)       3
         AudioControl Interface Descriptor:
           bLength                12
           bDescriptorType        36
           bDescriptorSubtype      2 (INPUT_TERMINAL)
           bTerminalID             1
           wTerminalType      0x0201 Microphone
           bAssocTerminal          0
           bNrChannels             1
           wChannelConfig     0x0000
           iChannelNames           0
           iTerminal               0
         AudioControl Interface Descriptor:
           bLength                 9
           bDescriptorType        36
           bDescriptorSubtype      6 (FEATURE_UNIT)
           bUnitID                 2
           bSourceID               1
           bControlSize            1
           bmaControls( 0)      0x00
           bmaControls( 1)      0x03
             Mute
             Volume
           iFeature                0
         AudioControl Interface Descriptor:
           bLength                 9
           bDescriptorType        36
           bDescriptorSubtype      3 (OUTPUT_TERMINAL)
           bTerminalID             3
           wTerminalType      0x0101 USB Streaming
           bAssocTerminal          1
           bSourceID               2
           iTerminal               0
       Interface Descriptor:
         bLength                 9
         bDescriptorType         4
         bInterfaceNumber        3
         bAlternateSetting       0
         bNumEndpoints           0
         bInterfaceClass         1 Audio
         bInterfaceSubClass      2 Streaming
         bInterfaceProtocol      0
         iInterface              0
       Interface Descriptor:
         bLength                 9
         bDescriptorType         4
         bInterfaceNumber        3
         bAlternateSetting       1
         bNumEndpoints           1
         bInterfaceClass         1 Audio
         bInterfaceSubClass      2 Streaming
         bInterfaceProtocol      0
         iInterface              0
         AudioStreaming Interface Descriptor:
           bLength                 7
           bDescriptorType        36
           bDescriptorSubtype      1 (AS_GENERAL)
           bTerminalLink           3
           bDelay                  1 frames
           wFormatTag              1 PCM
         AudioStreaming Interface Descriptor:
           bLength                29
           bDescriptorType        36
           bDescriptorSubtype      2 (FORMAT_TYPE)
           bFormatType             1 (FORMAT_TYPE_I)
           bNrChannels             1
           bSubframeSize           2
           bBitResolution         16
           bSamFreqType            7 Discrete
           tSamFreq[ 0]         8000
           tSamFreq[ 1]        11025
           tSamFreq[ 2]        16000
           tSamFreq[ 3]        22050
           tSamFreq[ 4]        32000
           tSamFreq[ 5]        44100
           tSamFreq[ 6]        48000
         Endpoint Descriptor:
           bLength                 9
           bDescriptorType         5
           bEndpointAddress     0x83  EP 3 IN
           bmAttributes            1
             Transfer Type            Isochronous
             Synch Type               None
             Usage Type               Data
           wMaxPacketSize     0x0062  1x 98 bytes
           bInterval               4
           bRefresh                0
           bSynchAddress           0
           AudioControl Endpoint Descriptor:
             bLength                 7
             bDescriptorType        37
             bDescriptorSubtype      1 (EP_GENERAL)
             bmAttributes         0x01
               Sampling Frequency
             bLockDelayUnits         0 Undefined
             wLockDelay              0 Undefined
Device Qualifier (for other device speed):
     bLength                10
     bDescriptorType         6
     bcdUSB               2.00
     bDeviceClass          239 Miscellaneous Device
     bDeviceSubClass         2 Common Class
     bDeviceProtocol         1 Interface Association
     bMaxPacketSize0        64
     bNumConfigurations      1
Device Status:     0x0000
     (Bus Powered)

Hans-Peter
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