Two computers, one monitor, one keyboard, and you're swapping HDMI cables and USB plugs every time you need the other machine. The Simplecom KM420 kills that. One toggle button switches both your HDMI display and all four USB 3.0 peripherals simultaneously. You get 4K at 60 Hz over HDMI 2.0, and the four downstream USB ports run at 5 Gbps for your mouse, keyboard, printer, or external drive. Aluminium casing keeps things cool without a fan. No drivers, no software — plug in two USB-A cables and one HDMI from each PC, press the button, done. Backward compatible with USB 2.0 and HDMI 1.4, so older gear still works. In stock, ready to ship from AU
| brand | Simplecom |
| model | KM420 |
| usb_upstream | 2x USB 3.0 Type-A (PC1 and PC2) |
| usb_downstream | 4x USB 3.0 Type-A |
| usb_max_bandwidth | 5 Gbps (SuperSpeed) |
| hdmi_version | HDMI 2.0 |
| max_video_resolution | 4K@60Hz (3840 x 2160) |
| backwards_compatibility | USB 2.0, HDMI 1.4 |
| casing | Aluminium alloy |
| power | USB-powered, no external adapter |
| operating_systems | Windows, macOS, Linux, Chrome OS |