2 Ports DisplayPort KVM SwitchDP KVM Switche is a displayport switch that helps to share 1 monitor and 4 USB 3.0 devices such as scanner, printer, mouse, keyboard between 2 PC. Ultra HD 4K Visual EnjoymentDisplayport KVM switch for 2 computers support resolution up to 3440x1440@144Hz,4k@60Hz3840×2160 @ 60Hz ,backward compatible with lower resolution.If need 3440x1440@144Hz, then need DP cable is DP1.4 cable. Note:Final resolution is also subject to graphic cards, monitors, cables and adapters and how those work together. DP1.2 KVM Switches with 4 USB 3.0 PortsDisplayport USB 3.0 switch with 4 USB 3.0 ports which can recognize keyboard,mouse,printer,scaner and other USB devices. USB 3.0 offers data transfer speeds of up to 5Gbps, while USB 2.0 offers data transfer speeds of only 480Mbps. Compatibility & 2 Switching MethdosAOOCOO displayport KVM switch driver-free and plug and play,no external power required.