Socket Communications 10/100 Ethernet CF Card Compatible with Windows CE Handheld PC Pro 2.11, Pocket PC 3.0 and Handheld PC Pro 3.0 Link your pocket PC to a partner PC from anywhere on the network Sleek design integrates connector and CompactFlash card into one unit Convenient LED indicators for link, speed, full duplex, transmit, receive, and collision Fast 10/100 Mbps speeds with auto-negotiation and full duplex