Widely Used The auto diagnostic cable tool can be used to close the optic ring and bypass unused equipment, and it suits for most kinds of cars. Quick Use The maletomale fiber optic loop is designed to diagnose issues with the fiber circuit, remove or add a single vehicle equipment, and does not affect the car optical fiber network. Material Durable and reliable to use; a tool for diagnosing or bypassing parts of the media oriented systems and transport optical system. Good Performance Fits and helps to quickly diagnose the problem; not only helpful for motherboard problems but also for lighting problems. Use scenarios Scenario 1: Diagnosing a fiber circuit fault by looping the connection to isolate the problematic segment without disrupting the rest of the car optical fiber network. Scenario 2: Removing or adding a single vehicle component in the optical network for testing or replacement while keeping the remaining network intact. Scenario 3: Troubleshooting motherboardrelated issues or lighting problems in vehicles that involve optical components.