Belkin F5D9231-4 v1

Overview
"P/N: 141700520007J", "R01", and "RoHS" within a triangle
 * is silkscreened on one F5D9231 v1's board.

Labels affixed to the device indicate it has an internal
 * Arcadyan model of WG7005D12 1-LF-AK.

This would seem to be another Arcadyan device using
 * the SuperTask! RTOS.

The default SSID follows the pattern of Belkin_G+MIMO_Wireless_XXXXXX
 * where XXXXXX is the last three octets of the wireless interface MAC
 * w/ upper case letters. OUIs may include 00:22:75.

Links of Interest

 * On the DD-WRT forums (links to pictures)

Serial Pinouts
(GND)   > to RT2880 (TxD) (RxD) [  ]           J2