Linksys WRV54G v1

OEM Gemtek WX5715 (WX5715_V01)

The CPU is part FWIXP425AB.

WRV54G v1 serial numbers appear to start with MEX0.

Pictures on the DD-WRT forums On the DD-WRT forums On the OpenWrt wiki

Additional FCC IDs of Q87-HGA7S-3 (Linksys HGA7S, high gain antenna) and Q87-HGA5S-3 (Linksys HGA5S, high gain antenna)

The default SSID may be linksys-g.