This KVM switch vga enables 2 computers share 1 set of monitor keyboard mouse printer/U-disk.FeatureBuilt with 3 USB 2.0 ports for keyboard mouse printer u-disk or other usb 2.0 devices. Also support wireless kb and mouse combo.Supports resolution up to 1920 x 1440@60Hz and DDC and windows 10/8/7 / XP / Vista (32/64-bit), Mac, Linux, DOS, Win3, WINNT, Netware, and Unix.Support USB speaker for both computers, pls plug the usb cable into the side USB port in the kvm box, plug 3.5mm into the monitor. It also can work with usb speaker with only usb cable, not come with 3.5mm jack.Support hdmi to vga/ vga to hdmi adapter.Support usb 2.0 hub, but please plug your own AC adapter inB hub for power.Example: for me, I use this 2 port kvm for two computers to share one monitor, keyboard, and mouse.For the third USB port, it's used frequently for USB speaker and U disk (two PCs also share them). Installation--First of all, connect 2 computers with KVM by the KVM cable(included).Please plug VGA head with USB into host computer, other head into KVM box.Secondly, connect the monitor with switcher by your own VGA cable (not included). Then plug the keyboard & mouse (USB cable are not included).Package included: 1 x vga KVM Switch ,2 x 1.2M USB VGA KVM cable, 1 x User Manual