Because there are many compatibility factors involved in KVM, when you meet troubles during use, pls to email via the Amazon platform .Thank you. FEATURES: This CKLau HDMI KVM3.0 has many features . Firstly, it has a USB 3.0 switcher, rather than USB 2.0 as most have. It has multiple configurable ways to switch devices (buttons on the front, wired remote controller, mouse or keyboard shortcuts which can be changed). You can also enable/disable the beep upon device switching. You can also turn on and off the keyboard shortcut recognition through a dedicated button on the front of the device. There is also an audio output on the front which mirrors the audio coming through the HDMI port. There is an auto-scan feature.(Interval time adjustable between 8 to 999 seconds (default is inactive). * Excellent build quality. With Metal housing, and rubber feet on bottom of device * Button, wired remote, or configurable key/mouse shortcut switching modes * All cables included( 4 HDMI cables, 4 USB 3.0 A to B cables, wired remote + cable.) * Can turn switching beep on/off * Wired remote with lights works in addition to front panel buttons * Front button to turn off keyboard switching shortcuts * Audio output jack replicates HDMI audio * Fast switching * No loss of HDMI monitor identification when system is not in use * Supports USB 3.0 devices to switch to selected device * Compact size, and unit has good weight Manual And Automatic Switching Mode Button switching: Push buttons on the front panel to switch.Keyboard hot-key switching: Double click the right[Ctrl] +click[Port Number]+click[Enter]Mouse switching: Double click middlie roller+left and right keys of mouse to switch.Wired-remote push button switching: Switch to any port by remote button after you plug it to the KVM. With 2 pcs extra USB 3.0 HUB There are two USB3.0 Hubs, and the data transfer speed is increased to 5Gbps /s(10 times faster than USB2.0). Hotkey on/off key Default turn on, ‘Hotkey on’ light is green.Customers can turn on/off this function according his requirement;If some gaming mouse and multimedia Keyboard don’t work, he need to turn off ‘Hot key on/off’ button, then the issue was solved. HDMI 2.0&HDCP 2.2 &HDR10 & EDID 4K KVM Switch Compatible with HDMI 2.0, HDCP 2.2, HDR10 and auto EDID. With 2 pcs extra USB 3.0 HUB Data transferring rate up to 5Gbps/s(10 times faster than USB 2.0). Signal Transmission More Stability CKLau 4 Port USB KVM’s core chip is from Silicon Image(USA), MCU is manufactured by CKLau: CKLAU TECHNOLOGIES INC.. Keep signal transmission reliably and stably. 4 Port KVM Switch with Audio Support auto detection, auto scan, waking up, with memory function in case of power-down. Installation Step 1. Turn off all devices and unplug all the cables; 2. Plug HDMI cables, special USB cables into KVM switch and your computers/laptops/PCs; 3. Plug HDMI cable into KVM switch and monitor; 4. Plug mouse and keyboard into KVM switch; 5. Plug speaker or microphone into KVM switch if needed; 6. Turn on KVM switch; 7. Turn on computers/laptops/PCs. Warm Tips: If your input devices without HDMI interface, please purchase reliable converter with chip. Converter may affect the function of KVM switch. Certified HDMI Adopter We are certified HDMI adopter over 10 years. Prevent infringement. Excellent image processing and transmission capacity, make the output signal is more smooth and steady. Package: 1 x HDMI KVM3.0 switch 4 x special USB cable 4 x HDMI cables 1 x Wired remote 1 x User manual