I own all three systems. I'm not sure on this as I'm still waiting for certain cables. what's very cheap is that the psx classic doesn't come with an ac adapter (only a micro usb cable). I'm thinking that the nes/snes classic did in fact come with ones. I haven't unboxed the snes classic btw. from what I remember all three are micro usb to ac adapters. however, I don't know if all are compatible. has someone tried this? I bought a 10ft micro usb to reduce the number of cables as I have. then, leave only one plugged in at a time.