LINOVISION 4 Port HDMI KVM Switch, 4K@30Hz Input with 4 USB2.0 Hub. Full Metal Housing. Hotkey Switch. Using One Set of HDMI Monitor, Keyboard and Mouse to Control 4 PC/DVR/NVR/PS3/PS4.4 in 1 Out

4 IN 1 OUT KVM SWITCH With this 4 port HDMI KVM Switch, you can use one set of HDMI monitor & USB Keyboard & Mouse console to connect and control 4 DVRs/NVRs/Computers/Servers, and conveniently switching anytime(Please note that the leftmost USB port cannot be connected to a printer or USB hub. ) ^^ HOTKEY SWITCH It can switch automatically, or control by buttons or hot-key from keyboard(You can find detailed instructions for hotkey switching in the user manual. It is easy. ), without any delay after switching. To enable the mouse/keyboard control, please connect the devices and KVM switch by the usb cable.

(This product comes with 4 sets of usb-b to usb-a cables) ^^ HIGH COMPATIBILITY, PLUG-N-PLAY Support hot plug, plug & play, connect or disconnect devices to the KVM switch in any time and without turn off devices. It is compatible to Operating System like Windows, Linux, Unix, MAC, etc. ^^ 24/7 US LOCAL + GLOBAL TECH SUPPORT This product comes with 1-year warranty and life-time 24/7 US Local +Global Technical Support. Free system consultant service. Ready and willing to help in anytime