Ac Adapter only solution to this problem?

[steffi]

So, I have a G-Tech Mini drive that typically operates on Bus Power from an external enclosure. Normally I have the MBP plugged into this enclosure and daisy chain to this drive and everything is good. However I recently added a NewerTech Voyager Q to the mix and whilst it has two FW800 ports it doesn't provide bus power to anything hanging off it. So unless I'm mistaken I'm pretty much stuck if I want access to the NewerTech Voyager Q and the G-Tech Mini drive at all times. So I need to shell out $20 to purchase the AC Adapter that goes with the G-Tech Mini drive. Anybody know of the Nokia Phone chargers will work as a substitute as I have two of those laying around but I don't know if the polarity is compatible or not.

 

[macstatic]

I realize your post is several years old, but thought I'd give it a go anyway...

Did you ever find out about the polarity or buy a G-tech AC adapter?
I'm also having Firewire trouble with my G-Drive Mini and have several 12V AC adapters but don't know the polarity of the drive.

 

[Mrbobb]

This is relatively ez to figure out if you have an ohm meter, cheap one under $10 bux will do, good for other tasks too, so not like one-use tool.