TP-LINK Archer T4U v2

Overview

 * • 866Mbps - 2-stream 802.11ac device (433Mbps per stream),
 * • 400Mbps - 2-stream 2.4GHz channel (256QAM) = AC1300 class

"2052500524" and "1608" is silkscreened on the board in the FCC photos.