AboCom WR5501

"M01-R5503-X20" is silkscreened on the board in the FCC photos.

There are two models covered by this FCC ID...
 * WR5501
 * WR5503

Possible login credentials of admin:password @ 192.168.1.254 per FCC manual. The web interface screenshots also show a SSID of RTK 11n AP.