USB 3.0 4 Port HDMI + HDMI Dual Monitor KVM Switch 4K@60Hz for 4 Computers Product Features: 4 computers/laptops share one set of keyboard, mouse and dual monitors, USB 3.0 ports, microphone and audio port; installation steps: 1. Insert the DC/5V adapter into the KVM ; 2. Plug the HDMI cable into the KVM and monitor;(Output) 3. Plug the HDMI cable and USB cable into the KVM and your computer/laptop (HDMI cables are not included)(Input) HDM1 IN1 A + HDM1IN1 B + USB IN1=PC1HDM1 IN2 A + HDM1IN2 B + USB IN2=PC2HDM1 IN3 A + HDM1IN3 B + USB IN2=PC3HDM1 IN4 A + HDM1IN4 B + USB IN2=PC4 4. Insert the mouse and keyboard into the KVM switch 5. If needed, you can connect a microphone and audio port With Simulation EDID This KVM dual monitor switch can simulate the EDID of the display, and store the resolution and refresh rate of the display, it comes with EDID emulators in each input port, keeping PCs always having correct display information. Without EDID, your windows may move around when switching. No longer have to sit and wait for the windows to adjust. Another feature of EDID is the ability to automatically identify the best resolution. Support up to 4K@60Hz for extended and mirrored display Supports high resolution up to 4K@60Hz and downwards.Note: Only when both your computer Graphics card and monitor support 4K@60Hz then you can get 4K@60Hz effect, so if you want the max resolution you have to check your devices first. 3 Port USB 3.0 interface with 5Gbps Plug and Play Supports 5Gbps data transfer speed , can transfer files in Seconds, Much faster than USB 2.0.3 USB 3.0 ports, backward compatible with USB 2.0 and USB 1.1, share USB devices such as keyboard mouse scanner, printer, flash drive, etc. Supports Separate Audio and Microphone Output This HDMI dual monitor KVM switch comes with a 3.5mm Audio Jack port with a DAC chip inside, which can be inserted into a 3-segment 3.5mm earpiece device, and a 3.5mm microphone interface, which can be inserted into a 3-segment microphone. 3 USB 3.0 Ports: Supports 5Gbps data transfer speed , can transfer files in Seconds, Much faster than USB 2.0.3 USB 3.0 ports, backward compatible with USB 2.0 and USB 1.1, share USB devices such as keyboard mouse scanner, printer, flash drive, etc. 2 Switching Modes: Quickly switch between the 2 computers with just one click of the switch button on the panel or use the wired remote controller (included in the package).Please note: This dual monitor KVM switch HDMI does not support hotkey switching. What's in the Box: 1 x USB 3.0 KVM Switch 2 Monitor 4 Computers4 x USB 3.0 a-b Cables1 x switch button cable1 x 5V adapter1 x User manual