TP-Link TL-WN781ND v1

150Mbps WIreless Lite N PCI Express Adapter The TP-LINK TL-WN781N is the same adapter.. but with an integral antenna.

"2053500245" and "Rev:1.0" is silkscreened on the board in the internal photos. "MODEL:11n PCI-E Adapter-6(AR11) A" and "REV:1.0sp1" is silkscreened on the board in the image provided by TP-LINK.

lspci -v
 * 168c:002b (168c:30a1) PCI ID

same PCI ID mentioned again (w/ 90:F6:52 OUI)

Possible 00:23:CD OUI (it's on a label in the FCC photos)

Pictures
TP-Link Images