Linksys WPC11 v.4 Wireless-B Notebook Adapter Linksys WPC11 v.4802.11b Wireless-B Notebook Adapter General Features: 11 Mbps high-speed transfer rate in 2.4 GHz radio band Wireless-B (802.11b) connectivity for notebook computers 32-bit PCMCIA type II interface 128-bit encryption Link LED indicator Transmit LED indicator Dimensions: 4.5" x 2.15" x 0.25" (L x W x D approximate)