Troubleshooting guide for HDMI display issues with 8KSW21-KVM

Troubleshooting guide for HDMI display issues

Product model: 8KSW21-KVM

1. Check the input channel on your display

Make sure you have selected the correct HDMI input channel on your monitor or TV. If you have multiple HDMI inputs, ensure that you have chosen the correct one for the KVM switch. Also, make sure that you swap to the correct HDMI output channel if only one source is connected.

2. Check HDMI cable length and type.

The HDMI cable length and type can affect the resolution and signal quality. Make sure you are using a high-quality HDMI cable that is appropriate for the resolution you are trying to display. Check the manual for the maximum transmission distance supported by your KVM switch, and make sure your cable is within that distance. If the cable is too long, it may cause signal loss and result in a blank display.

3. Try different cables and devices.

If you are still having issues, try using a different HDMI cable or connecting a different device to the KVM switch. This can help determine if the issue is with the KVM switch or the original device.

4. Check KVM switch settings.

Make sure that the KVM switch is configured correctly and that the correct input source is selected. Check the manual for instructions on how to change the input source on your KVM switch.

5. Contact customer support.

If none of the above solutions work, contact our customer support team for further assistance. (Leave your message in the community or send an email to