Ralink.For a list of all currently documented Ralink chipsets with specifications, see
AirStation Nfiniti N450 Wireless-N USB Adapter
"2976400701" is silkscreened on the board in the FCC photos.
- The device uses a single-chip Ralink IC, probably RT3573.
- Driver on wireless-driver.com
- Driver on Buffalo's US site (in a 269MB zip file, includes Win8 driver though)