In the ongoing saga of unpacking, i just came across an external USB drive that isn't labeled. I'm pretty sure I know what's on it, but wanted to check. Unfortunately, it seems to have gotten separated from it's power supply No problem, thinks I, I'll just borrow the power supply from this other drive.
Wrong: this enclosure uses 4-pin mini-DIN. The other one uses 6-pin. So someone decided to use someone else's daft idea — but just differently enough to be incompatible.