I bought this KVM to support my 2 PCs (corporate PC and home Linux). There are 4 USB 2.0 that can be shared between two PCs, I used one for the keyboard, one for the mouse and one for the USB camera. HDMI switching is fast, USB keyboard/mouse switching is fast too, sometimes I didn't even notice. You need a 5V power adapter (included). Totally satisfied, good price.
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