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What should I do if I cannot control the mouse and keyboard?

Sometimes you may find that even if all the cables are connected, you still cannot control the mouse & keyboard on the controlled device through KVM.

Possible Causes

  1. Incorrect wiring.

    Taking Comet (GL-RM1) as an example, it has two USB Type-C ports:

    • One for power input (connecting to a power adapter).
    • The other for connecting to a controlled device’s USB port to receive keyboard and mouse signals.

    Reversing these two connections will prevent the KVM device from starting up and make the mouse & keyboard unresponsive.

  2. USB cable mismatch.

    If you use a power-only USB cable (no data transfer) to connect the controlled device and KVM, the mouse and keyboard will not be controlled normally due to signal loss.

  3. Outdated KVM firmware.

  4. The controlled device's drivers are malfunctioning or blocked by IT security software.

Suggestions

  1. Check the wiring.

    Taking Comet (GL-RM1) as an example.

    The USB Type-C interface on the side is labeled "5V 2A" for power input, while the USB Type-C interface on the back has logos for mouse and keyboard, indicating that it is used to connect to the controlled device, in order to receive keyboard and mouse signals.

    Please check if these two Type-C interfaces are connected correctly.

    rm1 hardware ports

  2. Check the USB cable.

    Use the included USB cable. Ensure it connects the controlled device’s USB port to the KVM’s USB port and supports data transmission.

    Only cables capable of data transfer allow keyboard and mouse control of the remote device.

    Reconnect the USB cable and restart the controlled device.

  3. Upgrade the KVM's firmware to the latest version. KVM Firmware Download Center

  4. Check the Device Manager on the controlled computer for any malfunctioning drivers.

  5. Check if the controlled device is blocked by IT security software.

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