Controller Chip:VIA1-Lane (x1) PCI-Express with transfer rate 2.5Gb/s full duplex channel4 Ports Adaptor includes 3x External + 1x Internal Ports (shared with first external port)2 x 6 Pin + 1 x 4 pin external portWith low profile bracket for mounting in slim PC caseCompliant with PCI-Express Revision 1.0aCompliant with IEEE 1394 OpenHCI Specifications V1.0 and V1.1Support 400/200/100Mbps data transfer rateSimultaneous operation of multiple high-performance devicesFully plug & play and hot swapping supportedSupports MS Windows 98SE/ME/2000/XP/Server 2003/XP 64-bit/Vista/7/8/8.1 PC computer with one PCIe 1 x slot Supported OS 1 x PCI-E PCI Exppress 1394 Firewire Adapter Card1 x cable 1 x 1394 cable1 x Low profile bracket Check out our other items!