0a5c:bd11 — BCM4320 802.11bg Wireless Adapter (Broadcom Corp.)

What is this device?

This is the USB identifier for a BCM4320 802.11bg Wireless Adapter manufactured by Broadcom Corp.. The vendor ID 0a5c is registered to Broadcom Corp. with the USB Implementers Forum, and bd11 is the product ID that Broadcom Corp. assigned to this particular model. When you run lsusb on Linux, this device appears as 0a5c:bd11 Broadcom Corp. BCM4320 802.11bg Wireless Adapter.

How to identify it on your system

Linux

$ lsusb
Bus 001 Device 004: ID 0a5c:bd11 Broadcom Corp. BCM4320 802.11bg Wireless Adapter

You can filter directly with lsusb -d 0a5c:bd11, or get the full descriptor dump with lsusb -v -d 0a5c:bd11. Kernel messages from dmesg show the same pair as idVendor=0a5c, idProduct=bd11.

Windows

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

USB\VID_0A5C&PID_BD11
USB\VID_0A5C&PID_BD11&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_0A5C&PID_BD11"

macOS

$ system_profiler SPUSBDataType
    BCM4320 802.11bg Wireless Adapter:
      Product ID: 0xbd11
      Vendor ID: 0x0a5c  (Broadcom 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.

Raw usb.ids entry

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

0a5c  Broadcom Corp.
	bd11  BCM4320 802.11bg Wireless Adapter

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