Linksys WUSB54GS Wireless-G USB Network Adapter W/SpeedBooster
Specifications:

Mfr Part Number: WUSB54GS
Features:
High-speed wireless networking for your desktop or notebook via USB 2.0
New SpeedBooster technology increases Wireless-G performance by upto 35%
Easy, no-tools setup on any desktop or notebook computer with USB support
Wireless communications are protected by upto 128-bit data encryption
Standards: IEEE 802.11b, 802.11g, USB 1.1, USB 2.0
Ports: 1x USB
Channels (802.11b/g): 11 Channels (US, Canada), 13 Channels (Europe), 14 Channels (Japan)
LEDs: Power, Link
Transmitted Power: 15 ~ 17dBm (Typical) @ 11Mbps CCK, 15 ~ 17dBm (Typical) @ 54Mbps OFDM
Receive Sensitivity: -67dBm @ 54Mbps, -82dBm @ 11Mbps
Security features: WEP Encryption
WEP key bits: 64, 128 Bit
Certifications: FCC
Minimum Requirements:
PC with 400MHz or Faster Processor:
128MB RAM Memory
CD-ROM Drive
Avaliable USB Port
Windows 2000 or XP with Service Pack 1 (or later)
Dimension (WxDxH): 3.58 x 2.80 x 0.91 inch / 91 x 71 x 23 mm
Weight: 0.18 lbs / 0.08 kg