1- (x1) PCI- with transfer rate 2.5Gb/s full duplex channel. 3x external 1394A ports (2 * 6 Pin + 1 * 4 Pin) and 1x internal 1394A port (1 * 6 Pin). Compliant with PCI- revision 1.0a. Compliant with IEEE 1394-1995, 1394a-2000 standard. Compliant with IEEE 1394 OpenHCI Specifications V1.0 and V1.1. Support 400/200/100Mbps data transfer rate. Allows to connect more 1394a devices to your computer . Attention: 't Support hot-plugging. installation, Turn off the power and then plug in the power cord. 3 external FireWire(1394a) ports to support DV camcorders, , removable drives, scanner, digital cameras and other FireWire devices. OS Support: for Windows 2000/XP/Server 2003/Vista /Windows 7 /Windows 8 / 32/64 bit note: The built-in 6-Pin IEEE 1394 female on metal bar can not work with the 9-Pin IEEE 1394 female on board simultaneously. Size: 100 x 120 x 18mm/3.94 x 4.72 x 0.71in (.) Cable length: 80cm/31.50in (.) color:As shown Material:PC+metal Package Contents: 1 x Firewire Card Adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.