Switch, Kvm Switch Hdmi + Usb 4 Port, Plastic Body Material, Easy To Use One Monitor, Keyboard And Mouse Between Four Computers, Does Not Require Software Installation, Select Computer Using Buttons Or Hot Keys, Sound Signal As Confirmation Of Port Switching, Resolution : 3840 X 2160 / 4K, Interface: 4 X Hdmi + 4 X Usb, Usb 2.0 Port, For Connecting Additional Equipment, Warranty Not Less Than 12 Months, Hdmi Extender, The Number Of Input Ports Is Not Less Than 1, The Maximum Transmission Distance Is 120 M, The Number Of Output Ports Is Not Less Than 1, The Body Material Is Metal/Plastic, The Type Of The Extender Is Twisted Pair, There Is Audio Support, The Desktop Form Factor, Hdmi Input: 24/50/ 60Fs/1080P/1080I/720P/576P/576I/480P/480I, Hdmi Output: 24/50/60Fs/1080P/1080I/720P/576P/576I/480P/480I, Maximum Bandwidth 2255 Mhz, Maximum Aud Transmission Rate 6.75 Gbps, Video Signal Input 0.5 ~ 1.5 P-P Voltage, Ddc Signal Output 5 Volts P-P (Tt1l), Maximum Operating Current 100 Ma, Operating Temperature Ot-15 To + 55℃, Working Humidity From 5 To 90% Rh (Without Condensation), Warranty Of At Least 12 Months. Complete Set: At Least 2 Extension Modules, At Least 2 Power Adapters, User Manual, Extension Adapter (120 M) Hdmi Via Rg45 (Twisted Pair) Cat5e/6E, Adapter, Hdmi - Hdmi Connectors, Extender Type, Additionally Hdmi Splitter 4 Port Ver.1.4B, Ultra Hd 4Kx2k 3840X2160, 1080P, 3D, Dts-Hd Dolby, The Maximum Supported Resolution Is 1920X1080, The Format Of The Transmitted Signal Is Digital, Adapter, Hdmi - Rj45 Connectors, The Format Of The Transmitted Signal Is Digital, In Addition, The Signal Transmission Distance Is At Least 30 Meters, In The Set Hdmi - Rj45 Rx, Hdmi - Rj45 Tx, Monitor, The Diagonal Of The Display Is Not Less Than 21.5 Inches, Monitor, Display Diagonal Not Less Than 23.8 Inches, Resolution Not Less Than 1920X1080, Aspect Ratio 16:9, Lcd Matrix Type Ips, Led Backlight, Brightness Not Less Than 270.0 Cd/M2, Contrast Ratio 1000.0:1, Response Time Not More Than 1.0 Ms, Area Field Of View Horizontally: 178°, Vertically: 178°, Maximum Number Of Flowers 16.7 Million, Max. Frame Refresh Rate 144.0 Hz, Hdmi Inputs, Display Port, Headphone Jack Outputs, Multimedia Total Speaker Power 6 W, External Power Supply, Warranty At Least 12 Months