TP-LINK TL-WR842N v3.x

Overview
"2050500589" and "1523" is silkscreened on the board in the FCC photos.

Per the manual, the default SSID pattern is TP-LINK_XXXXXX (last
 * three octets of the BSSID, presumably upper case hex letters).

Links of Interest

 * TP-LINK TL-WR842N(EU) v3.1 on OpenWrt wiki