Last updated: 3/28/2025
Belkin SKVM and SKMs feature Anti-Tamper security protections. Depending upon the model, you may have Active or Passive Anti-Tamper indicators. Before deployment into a production environment, all KVMs and KMs should be checked over for evidence of tampering.
Anti-Tamper security tape
Applicable to:
- Belkin Secure 2nd Generation Universal KVMs
- Belkin Secure Modular KVMs
- Belkin Secure Modular KMs
An Anti-Tamper security tape is placed on the SKVM/SKM unit. When disturbed, this tape displays a visible tamper message. If this tape is not present or displays the tamper warning message, discontinue using this SKVM/SKM.
Active Anti-Tamper detection
Applicable to:
- Belkin Universal 2nd Generation SKVMs
- Belkin Universal DisplayPort SKVMs
Active Anti-Tamper is a physical and logical tamper system that detects if the SKVM was physically disturbed or opened. When the active Anti-Tamper detection is triggered, the SKVM will exhibit the following behaviors:
- No image will be shown on any connected display.
- Keyboard, mouse, and CAC functionality will be disabled.
- The SKVM will cycle through all channels while making a “click” sound.
Upon power-up, your SKVM performs a system self-check. If this check detects tampering, the SKVM will not function and will enter this state immediately. If you have an SKVM in this state, you can perform a troubleshooting test by disconnecting power from the SKVM and removing any items connected to it. After 10 seconds, reconnect the power. If the SKVM continues to display this behavior, it indicates that the Anti-Tamper has been triggered and the unit is no longer usable.
*In the case of a tamper event, the front panel channel selector buttons will illuminate while cycling through the channels.
Understanding self-test versus active Anti-Tamper behavior
All Belkin SKVM and SKM models perform a self-test during power-up. If this test fails, the SKVM/SKM will display a self-test failure, causing the SKVM/SKM to stop functioning and cycle through the channels. Unlike an Anti-Tamper event, self-test failures can generally be recovered from. Self-test failure behavior appears very similar to the Anti-Tamper behavior except for the following:
- The SKVM/SKM will remain silent while cycling through channels.
- SKVM units may display an image from the computer connected to channel 1 of the SKVM.
