Specification :

The TP-LINK TL-WN321G Wireless USB Adapter gives you the flexibility to install the PC or notebook PC in the most convenient location available, without the cost of running network cables.
54Mbps Wireless LAN USB Adapter, 2.4GHz, 802.11g/ b
WPA/ WPA2 data security, TKIP/ AES encryption, 64/ 128-bit WEP encryption
Provides Soft AP, supports PSP connection*
Internal Antenna
Support Operating System Windows 7( 32/ 64bits) , Windows Vista( 32/ 64bits) , Windows XP( 32/ 64bits) , Windows 2000
Wireless Signal Rates With Automatic Fallback 11g: Up to 54Mbps ( Dynamic) 11b: Up to 11Mbps ( Dynamic)