TP-Link TL-WN821N v4

Wikidevi Notes
"Rev:1.0" and "2052500371" appears to be silkscreened on the bottom side of the board in the FCC photos. "Rev:1.1", "2052500381", and "GFM0120008" appears silkscreened on the bottom side of the board with serial "12C71900408".

Pictures
TP-Link Images