I recently took apart my 72-60 pin adapter to clean it, but when I went to reassemble it, I couldn't figure out which way to put the circuit board in.

The shape of the board is perfectly symmetrical and there are no tabs or notches to prevent it from going in the wrong way. I'm afraid to use it because if it's in the wrong way, it might cause a short circuit or connect a +5V signal to something that could be damaged by it.

I don't know what brand it is. The sticker on the front is grey and has white text on it reading;

72-60 PINS
CARTRIDGE CONVERTER
T89

If anyone has the same one and could post a pic of the inside, that would rock. Otherwise I guess I'll have to track down some schematics and get out the multimeter.