http://www.gbax.com/new/retro.html What I'm worried about are compatibility issues in terms of the AV cables and/or the adaptor/power plug. I'm specifically talking about the Megadrive and Sega Master System
The Master System and the Mega Drive are brazilian and both are in PAL-M (Which is weird, since today all TV made here are PAL-M/NTSC) Anyway, it would work in USA, but in black and white. You would need to modify it or use a Transcoder.