Hi,
Màrton Nèmeth (Thanks,thanks, thanks :-)) has explained me how to copy 
and paste the output of usbview, so I post  it again because it is more 
readable than the previously attached screenshots.
Xwang

USB 2881 Device
Speed: 480Mb/s (high)
USB Version:  2.00
Device Class: 00(>ifc )
Device Subclass: 00
Device Protocol: 00
Maximum Default Endpoint Size: 64
Number of Configurations: 1
Vendor Id: eb1a
Product Id: e310
Revision Number:  1.00

Config Number: 1
    Number of Interfaces: 2
    Attributes: 80
    MaxPower Needed: 500mA

    Interface Number: 0
        Name: em28xx
        Alternate Number: 0
        Class: ff(vend.)
        Sub Class: 0
        Protocol: 0
        Number of Endpoints: 3

            Endpoint Address: 81
            Direction: in
            Attribute: 3
            Type: Int.
            Max Packet Size: 1
            Interval: 128ms

            Endpoint Address: 82
            Direction: in
            Attribute: 1
            Type: Isoc
            Max Packet Size: 0
            Interval: 125us

            Endpoint Address: 84
            Direction: in
            Attribute: 1
            Type: Isoc
            Max Packet Size: 0
            Interval: 125us

    Interface Number: 0
        Name: em28xx
        Alternate Number: 1
        Class: ff(vend.)
        Sub Class: 0
        Protocol: 0
        Number of Endpoints: 3

            Endpoint Address: 81
            Direction: in
            Attribute: 3
            Type: Int.
            Max Packet Size: 1
            Interval: 128ms

            Endpoint Address: 82
            Direction: in
            Attribute: 1
            Type: Isoc
            Max Packet Size: 0
            Interval: 125us

            Endpoint Address: 84
            Direction: in
            Attribute: 1
            Type: Isoc
            Max Packet Size: 564
            Interval: 125us

    Interface Number: 0
        Name: em28xx
        Alternate Number: 2
        Class: ff(vend.)
        Sub Class: 0
        Protocol: 0
        Number of Endpoints: 3

            Endpoint Address: 81
            Direction: in
            Attribute: 3
            Type: Int.
            Max Packet Size: 1
            Interval: 128ms

            Endpoint Address: 82
            Direction: in
            Attribute: 1
            Type: Isoc
            Max Packet Size: 1448
            Interval: 125us

            Endpoint Address: 84
            Direction: in
            Attribute: 1
            Type: Isoc
            Max Packet Size: 564
            Interval: 125us

    Interface Number: 0
        Name: em28xx
        Alternate Number: 3
        Class: ff(vend.)
        Sub Class: 0
        Protocol: 0
        Number of Endpoints: 3

            Endpoint Address: 81
            Direction: in
            Attribute: 3
            Type: Int.
            Max Packet Size: 1
            Interval: 128ms

            Endpoint Address: 82
            Direction: in
            Attribute: 1
            Type: Isoc
            Max Packet Size: 2048
            Interval: 125us

            Endpoint Address: 84
            Direction: in
            Attribute: 1
            Type: Isoc
            Max Packet Size: 564
            Interval: 125us

    Interface Number: 0
        Name: em28xx
        Alternate Number: 4
        Class: ff(vend.)
        Sub Class: 0
        Protocol: 0
        Number of Endpoints: 3

            Endpoint Address: 81
            Direction: in
            Attribute: 3
            Type: Int.
            Max Packet Size: 1
            Interval: 128ms

            Endpoint Address: 82
            Direction: in
            Attribute: 1
            Type: Isoc
            Max Packet Size: 2304
            Interval: 125us

            Endpoint Address: 84
            Direction: in
            Attribute: 1
            Type: Isoc
            Max Packet Size: 564
            Interval: 125us

    Interface Number: 0
        Name: em28xx
        Alternate Number: 5
        Class: ff(vend.)
        Sub Class: 0
        Protocol: 0
        Number of Endpoints: 3

            Endpoint Address: 81
            Direction: in
            Attribute: 3
            Type: Int.
            Max Packet Size: 1
            Interval: 128ms

            Endpoint Address: 82
            Direction: in
            Attribute: 1
            Type: Isoc
            Max Packet Size: 2580
            Interval: 125us

            Endpoint Address: 84
            Direction: in
            Attribute: 1
            Type: Isoc
            Max Packet Size: 564
            Interval: 125us

    Interface Number: 0
        Name: em28xx
        Alternate Number: 6
        Class: ff(vend.)
        Sub Class: 0
        Protocol: 0
        Number of Endpoints: 3

            Endpoint Address: 81
            Direction: in
            Attribute: 3
            Type: Int.
            Max Packet Size: 1
            Interval: 128ms

            Endpoint Address: 82
            Direction: in
            Attribute: 1
            Type: Isoc
            Max Packet Size: 2892
            Interval: 125us

            Endpoint Address: 84
            Direction: in
            Attribute: 1
            Type: Isoc
            Max Packet Size: 564
            Interval: 125us

    Interface Number: 0
        Name: em28xx
        Alternate Number: 7
        Class: ff(vend.)
        Sub Class: 0
        Protocol: 0
        Number of Endpoints: 3

            Endpoint Address: 81
            Direction: in
            Attribute: 3
            Type: Int.
            Max Packet Size: 1
            Interval: 128ms

            Endpoint Address: 82
            Direction: in
            Attribute: 1
            Type: Isoc
            Max Packet Size: 3072
            Interval: 125us

            Endpoint Address: 84
            Direction: in
            Attribute: 1
            Type: Isoc
            Max Packet Size: 564
            Interval: 125us

    Interface Number: 1
        Name: (none)
        Alternate Number: 0
        Class: ff(vend.)
        Sub Class: 0
        Protocol: 0
        Number of Endpoints: 1

            Endpoint Address: 83
            Direction: in
            Attribute: 1
            Type: Isoc
            Max Packet Size: 0
            Interval: 1ms

    Interface Number: 1
        Name: (none)
        Alternate Number: 1
        Class: ff(vend.)
        Sub Class: 0
        Protocol: 0
        Number of Endpoints: 1

            Endpoint Address: 83
            Direction: in
            Attribute: 1
            Type: Isoc
            Max Packet Size: 196
            Interval: 1ms

    Interface Number: 1
        Name: (none)
        Alternate Number: 2
        Class: ff(vend.)
        Sub Class: 0
        Protocol: 0
        Number of Endpoints: 1

            Endpoint Address: 83
            Direction: in
            Attribute: 1
            Type: Isoc
            Max Packet Size: 180
            Interval: 1ms

    Interface Number: 1
        Name: (none)
        Alternate Number: 3
        Class: ff(vend.)
        Sub Class: 0
        Protocol: 0
        Number of Endpoints: 1

            Endpoint Address: 83
            Direction: in
            Attribute: 1
            Type: Isoc
            Max Packet Size: 132
            Interval: 1ms

    Interface Number: 1
        Name: (none)
        Alternate Number: 4
        Class: ff(vend.)
        Sub Class: 0
        Protocol: 0
        Number of Endpoints: 1

            Endpoint Address: 83
            Direction: in
            Attribute: 1
            Type: Isoc
            Max Packet Size: 68
            Interval: 1ms

    Interface Number: 1
        Name: (none)
        Alternate Number: 5
        Class: ff(vend.)
        Sub Class: 0
        Protocol: 0
        Number of Endpoints: 1

            Endpoint Address: 83
            Direction: in
            Attribute: 1
            Type: Isoc
            Max Packet Size: 36
            Interval: 1ms

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