HighSecLabs SC21H-3 User Manual page 25

1. Check that each window is connected to the proper PC and
have the required border color.
2. Check that each window is coupled to the proper keyboard
and mouse (no cables are crossed between channels).
3. Check that each window is coupled to the proper DPP input
(if applicable).
4. Check that each window is coupled to the proper audio
output (if applicable).
5. Check that all video cable thumb screws are secured.
Note: The best possible configuration to the KVM Combiner is
when the output display resolution (as set in system menu) and
the channel resolution (as set in the channel menu) are equal to
the computer resolution.
For dual display switches it is also recommended that both
connected displays will be identical.
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Section 4 - Operation
2/4 Ports Secure KVM Combiner User Manual