Ubiquiti Networks airRouter

The Ubiquiti Networks logo and "SIMPLE AP N" appears to be silkscreened on these boards.
 * "11-00124-04" and "UBIQUITI NETWORKS (C) 2010" is also etched onto the board.

The wireless chip used is apparently the AR9285.
 * There are U.FL connectors on the board, but they are not connected by default.

UBNT's FCC internal photos for this device are perma-confidential.

Wikis

 * AirRouter/AirRouter-HP on the OpenWrt Wiki
 * On the DD-WRT Wiki (w/ specs)
 * This router seems to be supported by DD-WRT, but activation is required.

Forum threads

 * One thread (of several) on the OpenWrt Forums

Teardowns / etc

 * Internal pictures at openrouter.info

Serial
The UART header would not seem to be populated on all units.

Pinout
[3.3] U (RxD)  A  R  T (TxD) (GND) JP2

> to screw < to board edge

'Stock' (or at least, w/ some version of AirOS) boot log
U-Boot 1.1.4.2-s445 (Sep 6 2010 - 14:46:33)

Board: Ubiquiti Networks XM board (rev 1.1 e4a2) DRAM: 32 MB Flash:  8 MB Net:   eth0, eth1 Hit any key to stop autoboot: 0 Image Name:  MIPS Ubiquiti Linux-2.6.15-5.2 Created:     2011-01-14  12:43:09 UTC Image Type:  MIPS Linux Kernel Image (lzma compressed) Data Size:   771914 Bytes = 753.8 kB   Load Address: 80002000 Entry Point: 80002000 Verifying Checksum ... OK  Uncompressing Kernel Image ... OK
 * 1) Booting image at 9f050000 ...

Starting kernel ...

Booting... ...mounts done ...filesystem init done ...base ok ...update ok ...symlinks ok ...httpd ok ...detect ok ...running /sbin/init

Please press Enter to activate this console.

cat /proc/cpuinfo
XM.v5.3# cat /proc/cpuinfo system type            : Atheros AR7240 (Python) processor              : 0 cpu model              : MIPS 24K V7.4 BogoMIPS               : 259.07 wait instruction       : yes microsecond timers     : yes tlb_entries            : 16 extra interrupt vector : yes hardware watchpoint    : yes ASEs implemented       : mips16 VCED exceptions        : not available VCEI exceptions        : not available