For a list of all currently documented Realtek chipsets with specifications, see Realtek.
FCC approval date: 18 December 2008
Connector: Female Mini-B
Form factor tags: corded (modular) adapter
WI1 chip1: Realtek RTL8187B
WI1 chip2: Realtek RTL8225
Antenna connector: RP-SMA
DX SKU 29806
The board for this device is also put in a STAR BASE enclosure with FCC ID VYXARGTEK-0005 (presumably the same as DX SKU 26943).
The actual manufacturer appears to be AFOUNDRY / A Foundry (though ARGtek would appears to be affiliated with them), AFOUNDRY AF-WL-24+5..
top of a box of an adapter using this module