TP-LINK TL-WR940N v2.x

Overview
"2050500297" and "Rev:1.0" is silkscreened on the board in the FCC photos.
 * The device is presumed to use AR9341 (though this is not confirmed)..

The default SSID format is likely TP-LINK_XXXXXX.
 * Presumed F8:1A:67 OUI from the FCC EUT's MAC label..

Links of Interest

 * TL-WR940N v1.0 on the OpenWrt wiki