0cf3:9271 — AR9271 802.11n

Qualcomm Atheros Communications

Vendor ID: 0cf3
Product ID: 9271
Combined: 0cf3:9271
Decimal: 3315:37489

What is this device?

This is the USB identifier for a AR9271 802.11n manufactured by Qualcomm Atheros Communications. The vendor ID 0cf3 is registered to Qualcomm Atheros Communications with the USB Implementers Forum, and 9271 is the product ID that Qualcomm Atheros Communications assigned to this particular model. When you run lsusb on Linux, this device appears as 0cf3:9271 Qualcomm Atheros Communications AR9271 802.11n.

How to identify it on your system

Linux

$ lsusb
Bus 001 Device 004: ID 0cf3:9271 Qualcomm Atheros Communications AR9271 802.11n

You can filter directly with lsusb -d 0cf3:9271, or get the full descriptor dump with lsusb -v -d 0cf3:9271. Kernel messages from dmesg show the same pair as idVendor=0cf3, idProduct=9271.

Windows

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

USB\VID_0CF3&PID_9271
USB\VID_0CF3&PID_9271&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_0CF3&PID_9271"

macOS

$ system_profiler SPUSBDataType
    AR9271 802.11n:
      Product ID: 0x9271
      Vendor ID: 0x0cf3  (Qualcomm Atheros Communications)

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. Qualcomm Atheros Communications official support →

Raw usb.ids entry

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

0cf3  Qualcomm Atheros Communications
	9271  AR9271 802.11n

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