Here's how I solved this....
My Silver / Purple Jog Shuttle originally drew its power from a plug on the Fast firewire card. I wanted to replce the card with a FW 800 but was reluctant to give up the Jog Shuttle power. Closer inspection showed that although the JS accessed power via the cards external connection plate, the inside connection to that did not get it's power from the card at all. Rather it was powered by an additional internal adapter connector which actually tapped into one of the extra drive power connectors.
Waht I did was pull the card, unscrew the firewire card from the plate assembly and throw it away, keeping only the JS power adaptor and duc taping over the vacant firewire slots to seal them off. Re-installed the plate and re-connected the power cable and presto... Nice because the power source can be moved from system to sytem.
Now if someone would write some universal application software for the JS making it available to other editing systems this would be cool.... comes under Fat Chance....
Later,
Andy