[BlindMath] Anyone have an adapter for the ti-36x talking calculator?

[Aaron Cannon]

Hi all.

I just picked up the TI-36X talking  calculator on Ebay for cheap, but I
don't have an adapter for it, and it doesn't say how many volts it is
expecting. Does anyone have one who could check the specs on the adapter
itself for me so I can try to find one online.

I'm aware that I can get one from the manufacturer, but I'd rather avoid
paying $50 for a $10 adapter if I can help it.

Thanks for any and all help!

Aaron