The EXT-DVI-145 1x4 DVI Splitter from Gefen is a stackable distribution hub that features (1) input and (4) outputs. This unit is ideal for distributing DVI video signals to up to (4) different displays simultaneously. This unit features a built-in DVI detector for storage of EDID data and also supports the DDWG standard for DVI monitors. It will also maintain the highest DVI single link 1920 x 1200 video resolution.