1- (x1) PCI- with transfer speed of 2.5 Gb/s full duplex channel 3x external ports (2 x 6 pins + 1 x 4 pins) Meets PCI- Revision 1.0a. Supports data transfer speeds of 400/200/100 Mbps Compatible with IEEE 1394 OpenHCI V1.0 and V1.1 specifications No device required, plug and play. Compatible with Windows 98se/me/2000/XP/server 2003/Vista/7 32bit/64bit/win8. Supports IEEE P1394b revision 1.33+ standards. Meets PCI revision 1.0a. Meets IEEE 1394 OpenHCI V1.0 and V1 specifications. 1. Meets IEEE 1394-1995 for a high-performance serial bus. Meets IEEE 1394a-2000. Fully backward compatible with 1394a specifications. No drivers required (plug-and-play). Product specifications: Ports: 2x 1394a (9 pins, bilingual), 1x 1394a (6 pins), Compatibility: Windows XP/Vista/7 (32/64 bit) Supports data transfer speeds: 100Mbps/200Mbps/400Mbps/800Mbps size: 12.5 x 9.5 cm Material: ABS Color: As shown Packaging content: 1 x controller 1 x Firewire cable Only the above packaging content included, other products not included. Note: Light reflection and different screens may cause the color of the object in the image to differ slightly from reality. The allowed measurement error is +/- 1-3 cm.