Linksys AE3000

Overview
"Manufactured for CISCO", "48DNUR15.SGC", and "2011/12/20" is silkscreened on the board in the FCC photos.

20:AA:4B OUI

rt2800usb chip info dump
ieee80211 phy3: rt2x00_set_rt: Info - RT chipset 3593, rev 0402 detected ieee80211 phy3: rt2x00_set_rf: Info - RF chipset 000d detected