Hello,
First of all, I wanted to let you know that I consider to be a bad idea to do such a purchase, mainly for the fact that the power supply of the switch is not an order able part and as such it doesn't have a part number.
I can tell you the specifications of the power supply t see if you can get it but I wouldn't recommended as there is no way to know if it will work or for how long and since one of the main reasons to get this device is the PoE capabilities then it will be a high risk.
If you are still inclined to buy it, here are the specs for the power supply.
100V-240V, 1.0.56A, 50-60 HZ
i hope this helps.