Meant to be Seen

I lost the power supply for my old i-3D NTSC wireless 3D video transmitter and unfortunately, the device doesn't have any information about voltage or whether the tip should be positive or negative. I'm sure I have a suitable replacement lying around that would work but I don't want to just start plugging anything into it for fear of pushing too much juice through.

Does anyone know what the specs are for the original adapter? It would be printed on the adapter itself (which always struck me as kinda dumb to ONLY print it there since you end up in situations like this if it gets lost).

Thanks!!

*EDIT* Found a replacement, so problem resolved.