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【POWERED BY USB】It means powered by USB cables, no need external power adapter, just connect you switcher devices to enjoy, it make you work and life easier and simpler.Special Note: Hotkey switching is not supported when the keyboard and mouse use the USB 2.0 port.
![best kvm switch 4k dual monitors best kvm switch 4k dual monitors](https://m.media-amazon.com/images/I/41t+vE27J+L._SL500_.jpg)
【HOTKEY SWITCH】You can choose hotkey switch (Press scroll lock+ scroll lock+1/2), you also can switch the two signal sources by the panel buttons, the status light tells you which port is active.You can enjoy the most luxurious video with this HDMI KVM dual monitor Switch. 【HDMI KVM UHD 】 Support 4K x /3D/1080P resolution, make the image display more exquisite and realistic.
![best kvm switch 4k dual monitors best kvm switch 4k dual monitors](https://i.pcmag.com/imagery/roundup-products/04dpk3daHiMpU3j3Avdnhbz.fit_lim.size_1050x591.v1620071665.png)
If your computer supports this function and only one HDMI output, you can use a converter or conversion cable, such as VGA to HDMI converter or conversion cable, DVI to HDMI converter or conversion cable, etc. It requires every computer support 2 screen or above display functions.
![best kvm switch 4k dual monitors best kvm switch 4k dual monitors](https://www.lenkeng.com/keywords/image/2021-01-216009694c85f17.jpg)
Note: Only when both your source and monitor support then you can get effect, so if you want the max resolution you have to check your devices first. Support most wireless keyboard and mouse (or mechanical keyboard) on market, plug and play, no extra power adapter required. 【UHD Resolution】This small & exquisite kit supporting high resolution max up to, and also supports 3D and or other lower resolution (Downward Compatible).【2 Port Dual Monitor KVM Switch Extended Display】Control 2 computers or Laptops from one set of keyboard, mouse and 2 monitors which supports dual monitor extended display or duplicated NOTE:It requires each computer has 2 video output interfaces and support extended display,otherwise this dual monitor kvm can not be realized dual monitor extended display.