Aztech WL556E

Overview
"250-614900-601A" is silkscreened on the board in the FCC photos.

Default settings are per the FCC manual.
 * The default SSID format seems to be Aztech556_XXXX (where XXXX seems to be the last two bytes of the wireless interface MAC [upper case letters]).
 * Aztech556_initAzt may also be a relevant SSID (per WiGLE)..
 * .. also presumed to use an 00:26:75 OUI based on WiGLE data..