4 Computers Sharing Dual MonitorsThis 4 In 2 Out HDMI KVM can help you control 4 computers to share 2 monitors (extended display mode or duplicate display mode), and you can clearly see the working status by the indicator light, provided that your computer or laptop supports multiple or dual monitors. Extra Micro USB(5V 2A) Power Supply Port Design Support High Power Devices To Run With More Stable PerformanceNormally, there is no need to connect extra power adapter. However, if you connect a mechanical keyboard, mouse, or other high power device , you may need to use an power adapter for stable performance. Our KVM switch with a Micro USB (5V 2A) power port that supports 5V power input to power high power USB devices. (Product does not include a power adapter) Strong compatibility, No driver]our switcher is compatible with HDMI 1.4 and HDCP1.2 , supports USB2.0 protocol,Windows 10/8/8.