Trichromatic aberration, high clear image. No power supply and software drive needed. 4 standard "Y-Pb/cd-Pr/, L-Audio-R", out. Convenient operation, just the relative button "1, 2, 3" when you want to use one of the four connected devices. Easy connection, simply connect 3 audio & video devices (such as , , , DVD) to the "Input 1, 2, 3" connectors while your TV to the "Output" connector. This is a Out RGB component Selector. If you own 1 TV Set but more than 1 audio and video devices, this 3 Way ( Out) component AV Switch is to you. Connect 3 audio and video devices (such as , , , DVD to the "Input 1, 2, 3" connectors while your TV to the "Output" connector. Then, at once you want to use one of the 4 connected devices, just the relative button "1, 2, 3" rather than discommodiously reconnect the audio and video devices again and again. colour: as shown Material: ABS Package Contents: 2 x RGB component Switch selector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.