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


otus is an Atheros IEEE 802.11n USB Linux "vendor" driver, licensed under the ISC. This driver was used as base to write a new driver based on mac80211, ar9170, which is now upstream. ar9170 still lacks 11n support so you will want to use this driver if you want 11n support until ar9170 matures.

Supported hardware

Atheros 802.11n hardware:

  • UB81 - 2x2 2.4 GHz
  • UB82 - 2x2 2.4 GHz and 5 GHz
  • UB83 - 1x2 2.4 GHz

All of these devices are AR9170.

Products in the market


  • DWA-160A1


  • WNDA3100 (Dual Band, USB ID 0846:9010, FCC ID PY307300073)
  • WN111v2 (USB ID 0846:9001)


  • TL-WN821N


  • FRITZ!WLAN N USB Stick (USB ID 0x57c, 0x8401) - currently not running with the driver (see mailing list).


  • Kernel 2.4 - 2.6
  • openssl-dev package.

Mailing list

Our otus mailing list for this driver is:

Get the code

You can get the code here


wpa_supplicant otus driver

This driver requires its own supplicant driver for wpa_supplicant 0.4.8. For your convenience you can find the tarball here:

Features supported

  • IEEE standard compliance
  • IEEE 802.11a/b/g
  • IEEE 802.11h, 802.11d
  • IEEE 80211i
  • IEEE Draft 2.0 802.11n
  • Ad Hoc
    • join (2.4GHz, 5GHz if SKU allows)
    • create (2.4GHz , 5GHz if SKU allows)
    • Adhoc security: WEP
  • Security: WPA/WPA2 (Personal / Enterprise)

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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