For a list of all currently documented Ralink chipsets with specifications, see Ralink.
FCC approval date: 06 January 2014
Country of manuf.: China
Connector: Male A
Form factor tags: dongle
FCC ID: TE7WDN4200
Industry Canada ID: 8853A-WDN4200
N900 Wireless Dual Band USB Adapter
"2052500408" and a date code of 1319 is silkscreened on the board in the FCC photos.
TP-LINK's driver indicates this device is using the default RT3573 USB ID.