By integrating a Single Link DVI video switch with stereo quality audio, the 4-port ATEN's VS461 mark a revolutionary new approach in multimedia capability. You can now simply switch between the digital video and audio outputs of four digital devices (such as DVD players or laptops) on a single DVI display and speakers. Switch between DVI input sources with ease with the unit's front-panel pushbuttons, or sit back and utilize the IR remote control. This visual accessory outperforms earlier models by supporting Single Link DVI (Digital Video Interface), which provides improved video quality up to 1920 x 1200. Digital video input (flat panel displays, data projectors, plasma displays, digital TVs, and set-top boxes) and analog video input (flat panel displays, data projectors, plasma displays, digital TVs, and set-top boxes) are both supported by DVI.