For a list of all currently documented Ralink chipsets with specifications, see Ralink.
WiFi Broadband Router
The antenna configurations for this model appear to differ based on the unit shell color. The black model has RP-SMA connectors for all antennas. The white model has two integral antennas and one removable (RP-SMA).
This device uses 3x SiGe 5005L / Skyworks SE5005L (5GHz power amplifier).
This device is sold by LevelOne / DDC as the LevelOne WGR-8020 (white model).
"11340Y20IU00003B1" and "2011/08/09" appears to be silkscreened on the board in the FCC photos.
Flash and RAM for this device may be the same as the OvisLink AirLive N450R, 16MB and 64MB respectively.
Default credentials for this device are from the FCC manual. The FCC manual also states the default SSIDs are default_2.4g and default_5g.
00:50:18 (AMIT) is a probable OUI for this device.