The ATEN™ CS18208 8-Port USB 3.0 4K HDMI KVM Switch can effectively access and control up to 8 HDMI computers from a single USB keyboard, USB mouse, and HDMI monitor console. The CS18208 supports high video quality up to 4K DCI (4096 x 2160 @ 60Hz), presenting crystal-clear visuals. Cascadable to three levels – controls up to 512 computers. Video DynaSync™ – an exclusive ATEN technology that eliminates boot-up display problems and optimizes the resolution when switching among different sources.