ExpressCard compatible with standard 1.0 and 34mm formats. ExpressCard transfer speed of 250Mb/s. Features 1 FireWire 800 (IEEE 1394b bilingual type 9-pin female) and one FireWire 400 (IEEE 1394a 6-pin female) that support data transmission speeds of 400Mbps and 800Mbps respectively. It has a 12V DC-Jack to replenish FireWire ports with external power source if power to the ExpressCard is not enough (not included). Supports Hot Swapping and Plug-n-Play. Compatible with FireWire 1394a and 1394b type. Compatible with Windows environments. Based on the chipset 643. Includes FireWire 400 cable 6-pin male-male.