| ATU(4) | Device Drivers Manual | ATU(4) | 
atu —
atu* at uhub? port ?
atu driver provides support for wireless network
  adapters based around the Atmel at76c503, at76c503a, at76c505, and at76c505a
  USB chipsets.
Supported features include 802.11 and 802.3 frames, power management, BSS, IBSS, ad-hoc, and host-based access point mode.
The atu driver encapsulates all IP and ARP
    traffic as 802.11 frames, however it can receive either 802.11 or 802.3
    frames. Transmit speed is selectable between 1Mbps fixed, 2Mbps fixed, 2Mbps
    with auto fallback, 5.5Mbps, 8Mbps, or 11Mbps depending on your
  hardware.
Four different radio chipsets are used along with the device, each requiring a different firmware.
By default, the atu driver configures the
    card for BSS operation (aka infrastructure mode). This mode requires the use
    of an access point (base station).
For more information on configuring this device, see ifconfig(8).
The following devices are among those supported by the
    atu driver:
atu driver was written by Daan
  Vreeken and ported to OpenBSD by
  Theo de Raadt and David
  Gwynne. The OpenBSD driver was then ported to
  NetBSD by Jesse Off
  ⟨joff@NetBSD.org⟩.
| January 23, 2005 | NetBSD 9.4 |