?Professional after-sales service? We have a professional technical team dedicated to creating products that better meet customer needs. So if you encounter any questions about the product in the process of purchg the product, please send us an email, and we will provide you with a reasonable solution. ?USB2.0 interface?The device has 4 USB2.0 ports, supports wireless mouse, supports multiple signal sources, multiple displays, and can be connected to scanners, USB printers and other devices. The device also supports a variety of input devices or signal sources, is compatible with various computer systems, and can be widely used in various fields such as education, finance, and software development. Reminder: This device only supports key switch, not hot key switch. ?EDID+Automatic adjustment]? The device is adaptive to EDID, which can adapt to a variety of complex application environments, and has a built-in automatic adjustment system. This function makes the image smoother, clearer and stable, and makes life and work more efficient and worry-free. ?4K ultra-clear visual experience]?The device supports resolutions 3840*2160@60Hz, 3840*2160@30HZ, 3840*1600@60Hz, 2560*1440@60Hz, 2048*1152@60Hz, 1920*1080P@60Hz, 1920*1080P @30Hz, etc., support backward compatibility and good compatibility. When both the display and the signal source support 4K@60Hz, the device can provide a 4K experience. ?DP KVM switch]?Use a keyboard and mouse to easily control two computers to share two monitors, realize the switching of two sets of high-definition audio and video sources and USB interfaces, and support DP dual-screen display (this function is only available on computers that support dual-screen display). The device uses a more advanced DP interface than HDMI, making the use of the device more reliable and efficient.