Linksys WMP11 v4

Overview
"MW302-PF-XC2" is silkscreened on the board in the FCC photos. "3751-43020106" or "3763-43020106" is actually silkscreened on the device.

The serial number may start with BB7.

On djb's PRISM models page (archived here)
 * states the device is a OEM Amtron MW-302