1.PC to TV converter/VGA to AV converter 2.power from USB port 3.Supports IBM PC and MAC G4 DiscriptionProduct Features Pure hardware design just Plug & Display.No software driver requirement compatible with any operation system.Support 640 X 480@60/72/75/85Hz .800 x 600@60/72/75/85Hz,1024 x 768@60/70/75/85Hz , 1280 x 1024@60 display modeSwitchable NTSC,NTSC-EIAJ (For japan),PAL,PAL-M,PAL-N,PAL- ...