0bda:a811 — RTL8811AU 802.11a/b/g/n/ac WLAN Adapter

Realtek Semiconductor Corp.

Vendor ID: 0bda
Product ID: a811
Combined: 0bda:a811
Decimal: 3034:43025

What is this device?

This is the USB identifier for a RTL8811AU 802.11a/b/g/n/ac WLAN Adapter manufactured by Realtek Semiconductor Corp.. The vendor ID 0bda is registered to Realtek Semiconductor Corp. with the USB Implementers Forum, and a811 is the product ID that Realtek Semiconductor Corp. assigned to this particular model. When you run lsusb on Linux, this device appears as 0bda:a811 Realtek Semiconductor Corp. RTL8811AU 802.11a/b/g/n/ac WLAN Adapter.

How to identify it on your system

Linux

$ lsusb
Bus 001 Device 004: ID 0bda:a811 Realtek Semiconductor Corp. RTL8811AU 802.11a/b/g/n/ac WLAN Adapter

You can filter directly with lsusb -d 0bda:a811, or get the full descriptor dump with lsusb -v -d 0bda:a811. Kernel messages from dmesg show the same pair as idVendor=0bda, idProduct=a811.

Windows

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

USB\VID_0BDA&PID_A811
USB\VID_0BDA&PID_A811&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_0BDA&PID_A811"

macOS

$ system_profiler SPUSBDataType
    RTL8811AU 802.11a/b/g/n/ac WLAN Adapter:
      Product ID: 0xa811
      Vendor ID: 0x0bda  (Realtek Semiconductor Corp.)

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. Realtek Semiconductor Corp. official support →

Raw usb.ids entry

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

0bda  Realtek Semiconductor Corp.
	a811  RTL8811AU 802.11a/b/g/n/ac WLAN Adapter

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