Airlink+ AR315W

Overview
Manual (obviously authored by SerComm)

"M01-914M+-A10" is silkscreened on the board.

This board is highly homologous to the HotBrick SoHo 401W, another device based on the Marvell AP-32 reference design.
 * According to djb, the board was designed by SerComm.

The firmware for the ARM914 corroborates this as the firmware contains strings indicating SerComm authorship.

The OUI used in this entry is per a marketplace (eBay) label, and, as expected, it is that of AboCom.

Mixed branding probable - this device was sold around the Airlink+ -> Airlink101 transition

Forum threads

 * On the DD-WRT forums (images)
 * Info recovered via archive.org
 * On DSLReports

The hardware appears to be the same as the Hawking HWR54G rev M and perhaps the Xterasys XR-2407G. Per the manual (alternative on Airlink+ site), the default SSID is default.

Additional notes
The eCosCentric product showcase notes this device as using eCos.