The recommended PSU is the same as the PTP650 AC+DC unit, as that has more wattage. The part number for this is C000065L002C. It may also still be available on the previous revision PN of C000065L002B.
You have the AC POE injector for the 650, which I do not believe has enough power for Medusa.
Does anyone know how much power medusa needs? Just wordering if i can power it with netonix switch.
There's a thread over on the Netonix forums where someone was asking about this. You can find it HERE. Basically, people are saying you can, but it doesn't work well as it can't provide enough power.
If I were you, I'd provide the 450m power and sync (something the Netonix can't do) using a Packetflux rackinjector. We've used these and they work great with the 450m.