SMC SMCWPCIeS-N

Overview
"2052500243", "Rev:1.0", and "MADE IN CHINA" is silkscreened on the board in the FCC photos. This would seem to indicate this device was manufactured by TP-LINK / Proware - it is presumably a TP-LINK TL-WN781ND v1.

The device is using an single-chip Atheros IC. The chip is assumed to be AR9285 based on the specifications of the device.