Siig Inc Dp Firewire 2 Port Pcie Plug-in card - low profile - PCI Express x1 - IEEE 1394 Firewire Networking Type FireWire adapter; Form Factor Plug-in card - low profile. Networking Interface PCI Express x1; Networking / Ports Qty 2. Data Transfer Rate 400 Mbps; Data Link Protocol IEEE 1394 Firewire. Connectivity Technology Wired. Interfaces & Connections 2 x IEEE 1394 (FireWire) - 6 pin FireWire ( External ).