Buffalo WAPS-APG600H

Overview
This FCC ID appears to be used for both the WAPS-APG600H (Dual-band concurrent) and the WAPS-AG300H (Dual-band selectable).

"1244-00000854-50Z" is silkscreened on the board in the FCC photos.

Per the FCC manual, the default SSID patterns are presumed to be BUFFALO-XXXXXX_A and BUFFALO-XXXXXX_G (XXXXXX being the last three octets of some MAC used by the unit, upper case hex digits). The devices are also presumed to use a 10:6F:3F (Buffalo) OUI.