8K@60Hz 4 Port USB 3.0 Triple Monitor 1 HDMI + 2 DisplayPort KVM Switch for 4 Computers Sharing 3 Monitor and 3 USB 3.0 Ports, Audio & Microphone Features: 1. 8K Triple Monitor KVM Switch 4-Port allows 4 computers/laptops to share one set of keyboard, mouse, and 3 monitors 2. This 3-monitor KVM switch with 4 ports does not mean that it can only be connected to 4 computers. You may only have 2 computers now, but you may need to use 3 or 4 computers in the future, then you can choose this switch. Please make sure each of your PCs can support triple display before purchasing. 3. Support HDMI 2.1 and DP 1.4 standards and downward compatibility. 3 monitors output support up to 8K@60Hz for extended,mirrored or spliced display（Depends on your computer's graphics card.）; 4. KVM switch with 3 USB 3.0 ports for USB devices, and with extra Audio Microphone output 5. 2 Switching modes: Button switch and wired remote. 6. The ports that need to plug in HDMI/DisplayPort/USB cables are all hidden behind the triple monitor KVM switch, so the desktop doesn't get cluttered, you can enjoy the clean workspace. 7. Plug and play, compatible with Windows, Linux, Mac, Unix, Ubuntu, Raspberry and most other major OS installation steps: 1. Insert the DC/12V adapter into the KVM ; 2. Plug the 1*HDMI cable and 2*DisplayPort cable into the KVM switch and monitor;(Output) 3. Plug the 2*DisplayPort cable, 1*HDMI cable, and 1*USB cable into the KVM switch and your computer/laptop (HDMI and DP cables are not included)(Input) HDMI IN 1A + DP IN 1B + DP IN 1C + USB IN 1=PC1 HDMI IN 2A + DP IN 2B + DP IN 2C + USB IN 2=PC2 HDMI IN 3A + DP IN 3B + DP IN 3C + USB IN 3=PC3 HDMI IN 4A + DP IN 4B + DP IN 4C + USB IN 4=PC4 Please check whether HDMI IN 1A, DP IN 1B, DP IN 1C, and USB IN 1 corresponding, and whether HDMI IN 2A, DP IN 2B, DP IN 2C and USB IN 2 are corresponding. Mixed insertion is not supported. The same goes for PC3 and PC4. 4. Insert the mouse and keyboard into the KVM switch 5. If needed, you can connect a microphone and audio port Note： 1. Most of the reasons why only one video output works is because of an incorrect connection. Please make sure each PC has(1 HDMI +2 DP+USB cable) connect to the KVM. 2. If the input USB3.0 ports are not connected or connected incorrectly, the output USB device will not be recognized. 3. Note: HDMI and DP cables are not included 3 monitors 4 computers KVM 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. Switch by Panel button Push-button design allows for one-touch switching using a button on the KVM Switch box, eliminating the need to plug and unplug cables frequently, saving space and time. Wired Remote Control Supports wired remote switching for easy cable management, you can switch directly on the desktop, convenient for your life and work. What You Get 1x 4 Port USB 3.0 Triple Monitor KVM Switch, 4x USB 3.0 Cables, 1x Power Adapter, 1x Wired Button Switch, 1x User's manual.