Works with various types of FireWire 800 (1394b) devices including portable hard disk, DV camcorder, digital camera.; Supports hot-swapping and Plug-n-Play connection of peripheral devices.; Built-in 4-pin power connector provides extra power when connected to the system power supply.; Provides Two external FireWire 800 (1394b) ports and One internal FireWire 800 (1394b) ports devices connections.; Supports data transfer rates of 100, 200, 400 and 800 Mbps