2-Port 6-pin/4-pin Expansion Bracket Header.
This expansion bracket adds one 6-pin 1394a port and one 4-pin 1394a port to the rear of your desktop PC by connecting to the internal headers on your motherboard and screwing into the rear expansion panel.
Features/Specifications:

2-Port 6-pin/4-pin IEEE 1394a Expansion Bracket Header

ATX rear expansion bracket

Adds external access to built-in FireWire ports for motherboards with available headers

One (1) 6-pin 1394a (FireWire) port

One (1) 4-pin 1394a (FireWire) port