8 VS-30FW - Using the VS 30FW FireWire 800/1394b Repeater / HUB
5.1 Powering the FireWire Devices
Each FireWire device can derive its power in one of two ways:
Independently, by connecting each FireWire device to its own power supply,
while the VS 30FW is connected to the external 12VDC (12V, 500mA) power
supply (supplied with the VS 30FW)
Via the VS 30FW that is connected to an external powerful power supply: the
12VDC (12V, 2.1A) (optional with the VS 30FW). In this case, each of the (up
to) 3 FireWire devices can derive its power (up to 1A per port) from the
respective VS 30FW FireWire port