The 4 Port USB HDMI KVM Switch Box allows you to control 4 computers with one set of controls (mouse, keyboard, printer and monitor), it includes 4 kvm cables, HDMI and USB cables are 2 in 1.Entrance: Max 4 PCs. Output: 1 HDMI port and 3 USB2.0 ports. (such as monitor and mouse, keyboard, printer, scanner, USB disk)Plug and Play, one-button exchange, no adapter or software. No external power required.Support maximum resolution 3840 * 2100, support DDC output and high quality automatic identification.4 KVM cables included, HDMI and USB cables are 2 in 1. For business, office, multimedia teaching, boardroom game room, home theater, research test and more. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia