probekits

Kvm keyboard mouse not working

Keyboard and mouse failures after a KVM switch can depend on port assignment, power, or model-specific emulation.

Run the check

  1. Record which computer and KVM port lose input after switching, then test a basic wired keyboard and mouse.

  2. Check the exact model manual for designated USB ports and supplemental power connections.

  3. If its manual supports keyboard or mouse emulation controls, compare the documented modes one at a time.

Official reference: ATEN CS692 keyboard and mouse troubleshooting

Read the result

Input returning after a model-specific emulation change identifies a compatibility path; it does not prove a bad keyboard.

Limits and next step

KVM hotkeys and port behavior vary by model. A browser cannot inspect switch firmware or USB enumeration.

Repeat the check after changing one setting or connection. Keep a record of what changed before deciding whether the device needs service.