I'm installing a Firewire PCI card on a modern XP PC.
It has a power dongle connection on the back. The device manual simply says to connect this dongle IF you are using a firewire device that requires a powered firewire socket.
It doesn't say if this is common, or if there are any advantages or disadvantages.
What I'm asking is -- In general, is there any reason NOT to connect this dongle, if I have one free?
If I don't have one free, and all my current devices are working when plugged into this card -- what's the likelihood this will cause a problem later (not having it connected)?