NOTE: this page is for archival only, see the note at the end of the page.


at76_usb driver supports USB devices using Atmel at76c50x chipsets. Only 802.11b protocol is supported. The driver is using mac80211 stack.


The original at76_usb driver which had it's own 802.11 stack but based on the feedback in linux-wireless a mac80211 port was started. The mac80211 port is currently unstable but work is underway to get it to work better. Help is very welcome.

The original at76_usb git tree was here:

But it seems to be gone now. The current mac80211 port is in linux-testing and the history for the driver is here:

git:// at76


Some Atmel wireless cards require firmware to be loaded. The firmware can be downloaded from this site:

Supported chipsets

  • at76c503-i3861
  • at76c503-i3863
  • at76c503-rfmd
  • at76c503-rfmd-acc
  • at76c505-rfmd
  • at76c505-rfmd2958
  • at76c505a-rfmd2958
  • at76c505amx-rfmd

This is a static dump of the old wiki, taken after locking it in January 2015. The new wiki is at
versions of this page: last, v4, v3, v2, v1