Intel WiFi Link 5100 (bg, full size)

Overview
"SP MC 1X2 QS1 REV4", "WMID-251N_V13", and "190-a05-3502R RoHS" is silkscreened on the board in the FCC photos.

A MAC sticker on the board in the FCC photos has a 00:16:EA OUI.
 * Likely manufactured by Gemtek.