ZyXEL P-2812HNU-F3

"45-402-000351", "A0", and a date code of 1233 (presumably Aug. 2012)
 * is silkscreened on the board pictured below.

The default SSID for these units would appear to be ZyXEL_ followed
 * by the last 4 hex digits of the BSSID (upper case letters)


 * P-2812HNU-F3 on OpenWrt Wiki
 * CPU: PSB 80920, WLAN: RT3092L 2T2R 2.4GHz

Images

 * PCB photos