Originally Posted by
Unicr0nhunter
That's the same type adapter as the Phobya one linked in the OP except it's only 2 Amps instead of 5 Amps.
A D5 vario up to speed 4 will draw 2 Amps or under but on speed 5 will draw closer to 3 amps. I've used a 12v molex adapter almost identical to that 2 Amp coolerguys one (
This one, to be exact) for a D5 Vario on speed setting 3 or 4 just for filling and bleeding on several different occasions. I really can't imagine the Phobya one not being able to do the same since it's the same thing except even more higher power rated. That said, I wouldn't use either adapter or one like it as a long term / permanent power supply for the pump because in my experience they don't tend to have a very long lifespan when used continuously like that.
If I was going to go with an external pump I'd just make up my own PSU cable from the computer's power supply, or even just an extension cable, and route it outside the case to the pump just the same as you are going to have to do with the tubing. It would look tidier than an external power supply and you wouldn't have to worry about it not providing adequate power for just a pump.