Eventually, with the host's consent I continue to use the printer on the upper floor, neglecting the flickering of light or anything else,
the host just said it's fine (I am not sure if I am frying others' computers soon), hardware is done then.
And the software issues come, this stuff doesn't support WinSer2012, damn. I have to put on the W7 as virtual machine using Hyper-V, that's fine.
Omg, after all is done I found that Hyper-V doesn't support USB pass through yet, ridiculous MS, close soon.
Installed VMware Workstation and everything works like a charm.