I have an old DLink that they don't support anymore. I can't see the power
requirements on the little box, so I don't know which powersupply to use.

Hardware is a DLINK DE-805TP 5-port ethernet mini hub.
I have a supply that says Output: 9V DC 500mA

Is this the correct value for my hub? If not, what am I looking for?

Cheers, and thank-you in advance for your assistance,