The DVS-400 extends any DVI-D signal up to 220 feet to four displays and one local screen using Cat6 cabling while retaining perfect image quality at resolutions up to 1920 x 1200. SmartAVI, Inc.’s DVS-400 allows you to extend a DVI-D signal to up to four remote displays via one small unit that also loops a signal back to your computer so local monitoring is possible and simple.