SMC SMCWPCI-N5

Overview
"2052500291", "Rev:1.0", and "MADE IN CHINA" is silkscreened on the board in the FCC photos.
 * This is the same text found on the Proware PW-DN451D and TP-LINK TL-WN751ND v1's boards (via their FCC internal photos).

It appears the device is using (or is shown as using) AR9227-BC2A.

Additional specifications, per the FCC manual, follow...
 * Antenna gain: 2 dBi
 * Dimensions (unit): Dimensions::122 mm x 121 mm x 19 mm
 * Dimensions (box): 202 mm x 145 mm x 35 mm
 * Weight: Weight::47 g (card), 9 g (one antenna)

A MAC label with a B8:9B:C9 (SMC) OUI is affixed to the back of the board in the FCC photos. It is presumed to be used...

Links of Interest
Product page on SMC Asia
 * Datasheet