Microsoft Xbox 360 Internal Wireless Module (1399)

Overview
The FCC documents would indicate that this was meant to be used as an internal wireless module for some Xbox 360 models.

"WLU6150-D68 rev 4" and "08B1-17030MS(WLU6150-D68", "(RoHS)", "Rev4.0)" is silkscreened on the front of the module.
 * "Atheros Communications (C) 2010" and "CUS126-250-01780-080" is silkscreened on the back of the module.