2 Ports (1x shared Header) PCI-Express IEEE 1394A Firewire Card. 2x Ports external and 1x Pinout header(share with the port on the top). Compliant with PCI-Express Base Spec. Revision 1.1. Support 1-Lane 2.5Gbps PCI-Express bus. Integrated 1-Lane PCI-Express PHY (2.5Gbps) and 1394a PHY (100/200/400Mbps). Compliant with 1394 Open Host Controller Interface (OHCI) Release 1.1. Compliant with provision of IEEE Std 1394-1995 for a High-Performance Serial Bus and IEEE Std 1394a-2000. Compliant with System Management Bus Specification Revision 1.1. Support Hot Plugging on 1394a port