For a list of all currently documented Realtek chipsets with specifications, see Realtek.
Manuf/OEM/ODM Cameo WLG-1502 B3
(Est.) release date: November 2007
Connector: Male A
Form factor tags: dongle
WI1 chip1: Realtek RTL8187B
WI1 chip2: Realtek Model?
A date code (year+week) of 1120 (May 16 to 22, 2011) is silkscreened on the board in the image shown below.
The label states the FCC ID is S9ZTEW424UB (w/ IC ID of 6337A-TEW424UB)... but this is the FCC ID for the prior version.