[4K UHD output]: HDMI 2.0, up to 4096 2160@60Hz (YUV 4:4:4) resolution, also supports 2K@144Hz High refresh rate brings you a visual feast. Note: HDMI cable is not included in the package. Please use HDMI 2.0 cable. HDMI 1.4 cable can only reach 4K@30Hz Even lower. [2 Port HDMI KVM switch]: You can control 2 computers with just 1 set of controls. Perfect for workstations, offices, or wherever you need to multitask between computers. You can easily switch and control two computers' USB devices and HDMI displays at the same time.Note: HDMI cable is not included in the package. Please use HDMI 2.0 cable. HDMI 1.4 cable can only reach 4K@30Hz Even lower. [Powerful features, No power for short distances]: 2 HDMI+2 USB input/3 USB output/1 HDMI output. The 2 USB-B ports not only support the data transfer of the printer, but also the power supply of the device. (Please connect the 2 USB-B ports to the device to power the device. This will help improve stability). For everyday use, you don't need a power source. However, considering the stability of long-distance transmission, we still provide you with a USB power cable. [Support 2 switch modes] : 1. Support panel manual button switching. 2. Support extended line control switch switching.