20f4:804b — TEW-804UB 802.11a/b/g/n/ac (1x1) Wireless Adapter [Realtek RTL8811AU]

This is the USB identifier for a TEW-804UB 802.11a/b/g/n/ac (1x1) Wireless Adapter [Realtek RTL8811AU] manufactured by TRENDnet. The vendor ID 20f4 is registered to TRENDnet with the USB Implementers Forum, and 804b is the product ID that TRENDnet assigned to this particular model. When you run lsusb on Linux, this device appears as 20f4:804b TRENDnet TEW-804UB 802.11a/b/g/n/ac (1x1) Wireless Adapter [Realtek RTL8811AU].

Linux

$ lsusb
Bus 001 Device 004: ID 20f4:804b TRENDnet TEW-804UB 802.11a/b/g/n/ac (1x1) Wireless Adapter [Realtek RTL8811AU]

You can filter directly with lsusb -d 20f4:804b, or get the full descriptor dump with lsusb -v -d 20f4:804b. Kernel messages from dmesg show the same pair as idVendor=20f4, idProduct=804b.

Windows

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

USB\VID_20F4&PID_804B
USB\VID_20F4&PID_804B&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_20F4&PID_804B"

macOS

$ system_profiler SPUSBDataType
    TEW-804UB 802.11a/b/g/n/ac (1x1) Wireless Adapter [Realtek RTL8811AU]:
      Product ID: 0x804b
      Vendor ID: 0x20f4  (TRENDnet)

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.

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

20f4  TRENDnet
	804b  TEW-804UB 802.11a/b/g/n/ac (1x1) Wireless Adapter [Realtek RTL8811AU]

• 20f4:646b TEW-646UBH High Power 150Mbps Wireless N Adapter [Realtek RTL8188SU]
• 20f4:648b TEW-648UBM 802.11n 150Mbps Micro Wireless N Adapter [Realtek RTL8188CUS]
• 20f4:664b TEW-664UB H/W:V2.0R
• 20f4:805b TEW-805UB 300Mbps+867Mbps Wireless AC Adapter [Realtek RTL8812AU]
• 20f4:806b TEW-806UBH 802.11a/b/g/n/ac (1x1) Wireless Adapter [MediaTek MT7610U]

See all 6 devices from TRENDnet →