HP Pavilion 9800 HP Pavilion PC's - (English) 1394U User's Manual - Page 8

Cable Types There are two types of 1394/FireWire cable. One type, 6-pin to 6-pin, supplies power to the device it connects to. The other type is 6-pin to 4-pin, for devices that are selfpowered and do not require power from the 1394/FireWire bus. If you connect devices in a daisy chain and any device needs power from the cabling, all cabling must be 6-pin to 6-pin. If you use a repeater, you can use either type. Power Considerations The 1394/FireWire bus provides limited electrical power through the connector cables, as noted above. Some devices will have their own power supplies. Other devices may need more power than is available from the bus and can be powered from a powered repeater. Make sure to check the power requirements of any devices you plan to use before you connect them. Consult the device documentation for this information and the connection instructions. 8