USB3.1 / USB 3.0 KVM HDMI Switch 4 Port 1. PLS use less than 3 mtr HDMI 2.0 cable. Power on KVM switch by power adapter, Connect PC to Internet. 2. Connect USB cable firstly to wake up USB KVM switch around 20 secs. 3. Ensure connect mouse to USB1 port, keyboard to USB2. IR Remote IR Extension cable for flexible usage; Panel Control with LED indicator 4. Upgrade firmware,PC control,set HDCP compatibility via micro-USB port. 5. HDMI Four input to One output; HDMI input, USB input can switch in sync; 3.5mm Microphone for recording; SPDIF 5.1CH, Stereo 2.1CH audio extractor 6.For iOS,Windows, Linux,game player,security,surveillance center, HDMI monitor 1080p 120Hz/60Hz 3D, 1080p 144Hz. Display the latest HDMI input source automatically. Remember the last active HDMI input source if power cycle. Switch Priority: HDMI input 1>2>3>4 TOSLINK SPDIF Optical 5.1CH,Stereo Audio 2.1CH work independently. IF HDMI source play 2.1ch audio, SPDIF & Stereo audio work together; IF play 5.1CH audio, SPDIF work, but no Stereo. Please set HDMI source to Bitstream audio out. PACKAGE 1x KVM HDMI Switch, 1x IR remote control, 1x IR Extension cable, 1x Power Adapter, 1x User Manual, 2x Cable Tie, 2x Mounting Ear, 4x USB cable SPEC. HDMI Video HDMI 2.0, HDCP 2.2,4K 60Hz 4:4:4 18Gbps 8bit HDR D-o-l-b-y Vision.4K 60Hz 10bit 4:2:2. 4K 60Hz 12bit 4:2:0. 4K2K, 1080p, 1080i,24bit,30bit,36bit deep color HDMI AudioD-o-l-b-y Atmos,Digital 5.1 7.1CH,DTS:X,TrueHD,DTS-HD Master,LPCM 2.1/5.1/7.1CH SPDIF Digital 5.1CH, DTS-HD Master Audio,D-o-l-b-y AC3, DSD, LPCM 2.1/5.1CH HDMI Input Output cable Less than 3 mtr AWG26 HDMI 2.0 Standard cable Power Adapter Input AC 100V-240V, 50Hz,60Hz; Output DC 5V 3A Click EZCOOTECH get Seller Support by AMZN Message. Or get FREE REPLACEMENT by .?For Any question?--- Click EZCOOTECH get Seller Support by AMZN Message freely; Or get FREE REPLACEMENT by . STABLE PERFORMANCE --- Microphone input 3.5mm port. KVM hdmi switch with remote Plug and Play, no driver; Industrial metal chassis design improve cooling system; Threaded power adapter to prevent power loss. Attention PLS: 4pc USB cables in box. NO hotkey keyboard switch. hdmi kvm switch coaxial audio. HIGH COMPATIBILITY --- 4 port kvm usb hdmi switch for computers, pc Mac mini, iOS Windows Linux, Printer,Scanner, game controllers, external HDDs, Android phone, security, conference, surveillance center, office, Xbox one S, PS4 Pro, N-i-n-tendo, projector, HD camera. // Pls use less than 3 m HDMI 2.0 cable for 4K 60Hz signal. Pls ensure PC connect Internet to install driver automatically. AUDIO VIDEO --- 18Gbps HDCP2.2 HDMI2.0 4K@60Hz 4:4:4 8bit HDR D-o-l-b-y Vision,1080p 144Hz/ 120Hz/ 60Hz 3D, Digital 5.1 7.1CH,D-o-l-b-y Atmos,DTS:X -- SPDIF Optical 5.1CH,Stereo 2.1CH Audio Extractor; IF source play 2.1ch audio, SPDIF Stereo work in sync; IF source play 5.1ch , SPDIF work, but Stereo NOT; IF source play 7.1ch, HDMI OUT 7.1ch work only, SPDIF NOT. EASY SET UP --- ?1. Power on KVM Switch by power adapter; Connect PC to Internet ?2. Connect USB HDMI cable firstly to wake up USB switch around 20secs. Ensure mouse to USB1, keyboard to USB2. 3. Display the latest HDMI input source (HDMI input priority: 1>2>3>4) 4. RE HDMI signal issue, PLS use less than 3 mtr AWG26 HDMI 2.0 standard cable , press SELECT button for 5 sec. Or connect HDMI cable firstly, turn on TV then power on switcher. HDMI KVM Switcher 4 In 1 Out with 4 port USB3.0 / USB3.1 Audio Out --- PLS use less than 3 mtr AWG26 HDMI2.0 standard cable --- Control 4 HDMI sources / 4 computers laptops by one set USB keyboard+mouse, mechanical gaming keyboard --- IR Remote with IR Extension cable -- KVM HDMI Auto switch HDCP Bypass audio extractor 5.1CH 2.1CH.