Aten 4 Port USB 3.0 4K 60Hz Dual HDMI KVMP Switch, Video DynaSync, switching via RS232, hotkeys, pushbuttons and mouse, supports up to 4096 x 2160 @ 60 HZ, Quad display by connecting two CS1844. Superior video quality – 4096 x 2160 @ 60Hz and 3840 x 2160 @ 60Hz; 2-port USB 3.1 Gen 1 hub with SuperSpeed 5 Gbps data transfer rates Quad-Display – connect two CS1844 units for a quad-display setup controlled by one operator Supports Video DynaSync™ Computer selection via pushbuttons, hotkeys, mouse, remote port selector, and RS-232 commands Package Contents 1x CS1844 4-Port USB 3.0 4K HDMI Dual Display KVMP™ Switch 8x HDMI 2.0 Cables 4x USB 3.0 Cables 4x Speaker Cables 4x Microphone Cables 1x Power Adapter 1x Remote Port Selector 1x User Instructions