Product Details:A Performance PC’s custom made firewire extension cable used to extend the length of your cases internal Firewire cable by 24.Please consult your motherboard manual to check for pin outs of your 1394 headers. Standard Wire Assignments Blue: TPA + Orange: TPA – Green: TPB + Red: TPB – White: VP / Voltage + / VCC Black: GND / Voltage – Black: S-GND / Over Current / Shielding The S-GND wire is fatter and can be easily recognized