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 has it's own 802.11 stack.

See also at76c50x-usb, the mac80211 port of this driver.


The driver is now in staging tree and was included in linux 2.6.28 release. The driver is now in maintenance mode and all development should happen with at76c50x-usb.

Send all patches to Greg Kroah-Hartman <> and CC Kalle Valo <>.


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
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