2c7c:0191 — EG91 LTE modem

Quectel Wireless Solutions Co., Ltd.

Vendor ID: 2c7c
Product ID: 0191
Combined: 2c7c:0191
Decimal: 11388:401

What is this device?

This is the USB identifier for a EG91 LTE modem manufactured by Quectel Wireless Solutions Co., Ltd.. The vendor ID 2c7c is registered to Quectel Wireless Solutions Co., Ltd. with the USB Implementers Forum, and 0191 is the product ID that Quectel Wireless Solutions Co., Ltd. assigned to this particular model. When you run lsusb on Linux, this device appears as 2c7c:0191 Quectel Wireless Solutions Co., Ltd. EG91 LTE modem.

How to identify it on your system

Linux

$ lsusb
Bus 001 Device 004: ID 2c7c:0191 Quectel Wireless Solutions Co., Ltd. EG91 LTE modem

You can filter directly with lsusb -d 2c7c:0191, or get the full descriptor dump with lsusb -v -d 2c7c:0191. Kernel messages from dmesg show the same pair as idVendor=2c7c, idProduct=0191.

Windows

In Device Manager, open the device, go to Details → Hardware Ids. This device reports:

USB\VID_2C7C&PID_0191
USB\VID_2C7C&PID_0191&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_2C7C&PID_0191"

macOS

$ system_profiler SPUSBDataType
    EG91 LTE modem:
      Product ID: 0x0191
      Vendor ID: 0x2c7c  (Quectel Wireless Solutions Co., Ltd.)

Driver help

Having driver issues with this device? Most USB devices are handled by a generic class driver; if yours shows up as an unknown device, confirm the ID above first, then check the manufacturer's downloads page.

Raw usb.ids entry

The exact lines this page is generated from, in the upstream source file:

2c7c  Quectel Wireless Solutions Co., Ltd.
	0191  EG91 LTE modem