Check the listing for details. UNIVERSAL Female MOST Fiber Optic Loop Bypass Adapter BMW SOS FIX W/ SUPPORT!. Condition: New. Listed at 15.89 USD. Our universal, fiber optic loop is unique. You may have noticed it looks different than the other MOST(Media Oriented Systems Transport) fiber optic bypass loops. That’s because it has been designed by us to universally fit every fiber optic multimedia component in your vehicle, including the satellite receiver, power amplifier, TCU (Bluetooth) module, MULF unit, CD changers, and many others. Our Custom, UNIVERSAL Female Fiber Optic Loop connector is Plug & Play. (Other seller's standard MOST loops DO NOT the OEM fiber optic connections without user modification & cutting)Connects to Male "MOST" connectors on multimedia components (see second picture above for visual clarification)Confidently run diagnostics and bypass bad components, right out of the boxDomestic, U.S. Based Product Support Via TEXT or VOICE - Support Contact Info Included in PackageCompatible With: BMW, Mercedes, and other vehicles that use the MOST fiber optic network systemFits All MOST style fiber optic multimedia component connectionsWhen you test or bypass a component you ONLY need a loop with a "female" side of the connecter, don’t be fooled by others listing selling “pairs” of standard Male & Female MOST fiber optic loop sets, the Male loop in those kits are absolutely useless when troubleshooting sound and SOS errors with your vehicle. Our loop is compatible with BMW, Mercedes, Audi, Porsche and many other automotive manufacturers. We also offer USA phone support. (please take a look at our loop's reviews). If for some reason you purchase this bypass loop and continue to have problems correcting your audio or SOS light issue you may contact us. We will personally reach out to you troubleshoot your unique scenario and work with you to get the problem solved! Here's a YouTube video of a user showing a basic bypass using our loop: https://www.youtube.com/watch?v=N7E4lTPgChg If you have any questions, please ask us, we are here to help!