Off the top of my head-
Intellivision's
Intellivision II's
Intellivision III
Tandyvision
Atari 2600(?)
SMS (mods: S-Video, Composite + Stereo)
SMS's (unmodded)
MarkIII SMS
Gam*boy PSG
Gam*Boy FM
Game Gear's
Famiclone
NES's
NES Top Loader
NES Hong Kong Version
NEX
Gameboy Advance
Gameboy Advance SP
Gameboy Advance Micro
DS
DS Lite
PSP
TurboGrafx-16's
Turbografx (PAL)
Turbo Express
Turbo Duo's
PC Engine
Coregrafx
Coregrafx II
Shuttlegrafx
SuperGrafx
PC Engine Duo
PC Engine Duo RX (mods: S-Video, Composite + Stereo, blue led, region button)
PC Engine GT
PC-FX
Genesis (mods: cart slot, S-Video, Composite + Stereo, different led, region switch)
Genesis's (unmodded)
Genesis II (mods: cart slot, S-Video, Composite + Stereo, blue led, region switch)
Genesis II's (unmodded)
Megadrive II(PAL) (mods: cart slot, S-Video, Composite + Stereo, blue led, region switch, frequency switch)
Megadrive (Japan)
Multi Mega (Japan)
Sega-CD2's
Mega-CD2 (PAL) (mods: multibios)
Nomad
SNES's
SNES 2
Super Famicom's
Super Famicom (Korean)
Saturn 1's
Saturn 2's
Saturn Grey's
Saturn White's
Playstation
PSOne
Playstation 2 Slim
Dreamcast's
Gamecube's
Wii
Xbox
Xbox 360
Street Figher II CE 6-button cabinet
Final Fight cabinet
Jamma cocktail cabinet
Mame cabinet