Dan writes:

"The Dell drivers use the same configuration for PIDs:

81A2: Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card
81A3: Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card
81A4: Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card
81A8: Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card
81A9: Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card

These devices are all clearly Sierra devices, but are also definitely
Gobi-based.  The A8 might be the MC7700/7710 and A9 is likely a MC7750.

>From DellGobi5kSetup.exe from the Dell drivers:

usbif0: serial/firmware loader?
usbif2: nmea
usbif3: modem/ppp
usbif8: net/QMI"

So these devices all use the standard Sierra Wireless layout
supported by this driver.

Reported-by: AceLan Kao <acelan....@canonical.com>
Reported-by: Dan Williams <d...@redhat.com>
Signed-off-by: Bjørn Mork <bj...@mork.no>
---
 drivers/usb/serial/qcserial.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c
index e6673946680d..2dc301802f80 100644
--- a/drivers/usb/serial/qcserial.c
+++ b/drivers/usb/serial/qcserial.c
@@ -144,6 +144,11 @@ static const struct usb_device_id id_table[] = {
        {DEVICE_SWI(0x1199, 0x901f)},   /* Sierra Wireless EM7355 */
        {DEVICE_SWI(0x1199, 0x9041)},   /* Sierra Wireless MC7305/MC7355 */
        {DEVICE_SWI(0x1199, 0x9051)},   /* Netgear AirCard 340U */
+       {DEVICE_SWI(0x413c, 0x81a2)},   /* Dell Wireless 5806 Gobi(TM) 4G LTE 
Mobile Broadband Card */
+       {DEVICE_SWI(0x413c, 0x81a3)},   /* Dell Wireless 5570 HSPA+ (42Mbps) 
Mobile Broadband Card */
+       {DEVICE_SWI(0x413c, 0x81a4)},   /* Dell Wireless 5570e HSPA+ (42Mbps) 
Mobile Broadband Card */
+       {DEVICE_SWI(0x413c, 0x81a8)},   /* Dell Wireless 5808 Gobi(TM) 4G LTE 
Mobile Broadband Card */
+       {DEVICE_SWI(0x413c, 0x81a9)},   /* Dell Wireless 5808e Gobi(TM) 4G LTE 
Mobile Broadband Card */
 
        { }                             /* Terminating entry */
 };
-- 
2.0.0.rc0

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