--- product_id: 388374685 title: "Mellbree 2Pcs Fiber Optic Loop, Female and Male Fiber Optic Bypass Loop Adapter Connector Diagnostic Device Tool Compatible for Benz Audi Mercedes BMW VW Porsche Most Optical System" brand: "mellbree" price: "VT3857" currency: VUV in_stock: true reviews_count: 10 category: "Mellbree" url: https://www.desertcart.vu/products/388374685-mellbree-2pcs-fiber-optic-loop-female-and-male-fiber-optic store_origin: VU region: Vanuatu --- # Instant fiber-optic network bypass Precision diagnostic tool Compatible with top luxury brands Mellbree 2Pcs Fiber Optic Loop, Female and Male Fiber Optic Bypass Loop Adapter Connector Diagnostic Device Tool Compatible for Benz Audi Mercedes BMW VW Porsche Most Optical System **Brand:** mellbree **Price:** VT3857 **Availability:** ✅ In Stock ## Summary > ⚡ Diagnose Like a Pro, Drive with Confidence! ## Quick Answers - **What is this?** Mellbree 2Pcs Fiber Optic Loop, Female and Male Fiber Optic Bypass Loop Adapter Connector Diagnostic Device Tool Compatible for Benz Audi Mercedes BMW VW Porsche Most Optical System by mellbree - **How much does it cost?** VT3857 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/388374685-mellbree-2pcs-fiber-optic-loop-female-and-male-fiber-optic) ## Best For - mellbree enthusiasts ## Why This Product - Trusted mellbree brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact & Lightweight:** Weighing just 0.01 kg, it’s the perfect portable tool for on-the-go professionals. - • **Rapid Fault Detection:** Pinpoint fiber-optic line issues in seconds without disrupting your vehicle’s network. - • **Dual Gender Adapter Set:** Includes both male and female connectors for versatile, hassle-free diagnostics. - • **Non-Intrusive Network Bypass:** Bypass faulty components without affecting the in-vehicle fiber-optic system integrity. - • **Universal Luxury Compatibility:** Seamlessly works with Audi, BMW, Mercedes, Porsche, VW, and more—your all-in-one diagnostic ally. ## Overview The Mellbree 2Pcs Fiber Optic Loop is a precision diagnostic and bypass tool designed for fiber-optic automotive networks. Compatible with premium brands like Audi, BMW, Mercedes, Porsche, and VW, it enables quick fault detection and seamless bypass of faulty components without disrupting the vehicle’s optical system. Lightweight and versatile, it includes both male and female adapters, making it an essential tool for professional-grade vehicle diagnostics. ## Description What You Get: Mellbree fiber optic loop , If there is any dissatisfaction with the product, or the parts are missing, please contact us at any time. Review: Inexpensive and well designed. - Works exactly the same as the ones that are so much more expensive. Perfectly priced and functional. Review: Great product - Arrived as described and works perfect ## Features - Fiber optic bypass loop can perfectly diagnose fiber-optic line problems, remove or add a single in-vehicle device, without affecting the in-vehicle fiber-optic network. It is an excellent tool for diagnosing/bypassing MOST optical system components. - Male and female fiber optic loop adapter can help you find the fault point quickly and diagnose the problem quickly. It is not only helpful for motherboard problems, but also for indicator problems, whether it is a motherboard transceiver problem or a cable connection problem. - Widely adapted: Auto diagnostic cable tool can be used to close the optic ring and bypass the useless equipment. Compatible for Brand car Audi, BMW, Mercedes, Porsche, Volkswagen etc. According to the practical application , different models can be connected simultaneously. - Package Content: 1 X male fiber optic loop adapter + 1 X female fiber optic loop adapter. - What You Get: Mellbree fiber optic loop , If there is any dissatisfaction with the product, or the parts are missing, please contact us at any time. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09KZWP19M | | Best Sellers Rank | #10,184 in Automotive ( See Top 100 in Automotive ) #67 in Code Readers & Scan Tools | | Brand Name | Mellbree | | Cable Type | Fiber Optic | | Compatible Devices | Audi, BMW, Mercedes, Porsche, Volkswagen | | Compatible Phone Models | No Compatible Phone Models | | Connector Gender | Male-to-Male | | Connector Type | Optical | | Customer Package Type | protective packaging | | Customer Reviews | 4.2 4.2 out of 5 stars (596) | | Indoor Outdoor Usage | Indoor, Outdoor | | Item Shape | Round | | Item Weight | 0.01 Kilograms | | Manufacturer | Mellbree | | Model | Mel-fol | | Model Name | Mel-fol | | Number of Items | 2 | | Other Special Features of the Product | Fiber Optic Diagnostic, Network Bypass | | Outer Material | Other | | Recommended Uses For Product | automotive fiber-optic network diagnosis and bypass | | Specification Met | CE | | Unit Count | 2.0 Count | ## Product Details - **Brand:** Mellbree - **Cable Type:** Fiber Optic - **Compatible Devices:** Audi, BMW, Mercedes, Porsche, Volkswagen - **Connector Type:** Optical - **Special Feature:** Fiber Optic Diagnostic, Network Bypass ## Images ![Mellbree 2Pcs Fiber Optic Loop, Female and Male Fiber Optic Bypass Loop Adapter Connector Diagnostic Device Tool Compatible for Benz Audi Mercedes BMW VW Porsche Most Optical System - Image 1](https://m.media-amazon.com/images/I/61Qpz4fgnVL.jpg) ## Questions & Answers **Q: Does work on a BMW 2007 335i?** A: Yes. Used this on my 09 335xi **Q: Does this work on a 2009 650i?** A: I used this link on a 2009 XF Jaguar to bypass the Navigation unit in the system... well made link and arrived ahead of projected time... John, South Island NewZealand **Q: Will this work on a 2008 BMW 536xi ?** A: As long as the system you are working on is fiber optic then yes. If a wired system then no it won’t. **Q: Does it work for a 2007 Mercedes ml 320?** A: No,at all! ## Customer Reviews ### ⭐⭐⭐⭐⭐ Inexpensive and well designed. *by A***N on February 1, 2026* Works exactly the same as the ones that are so much more expensive. Perfectly priced and functional. ### ⭐⭐⭐⭐⭐ Great product *by S***Z on March 15, 2026* Arrived as described and works perfect ### ⭐⭐⭐⭐⭐ Saved me hundreds and hundreds of dollars *by M***L on March 29, 2026* Bought a used 2016 Volvo xc60 for my daughters first car. We quickly realized that the battery was draining 30-40% just by sitting for one day. The used car dealer replaced with a fresh battery... But the issue persisted. My daughter had already fallen in love with the car... So returning it was out of the question. I thought I could figure it out myself. Spent hours searching how to find battery drain issues. Hours using a multimeter and testing all the fuses. Nothing... Nothing showing power draw. It didn't make sense. Two different mechanics told me this is hard to diagnose and they would charge me $220/hr... That they could spend up to 3 hours and still not find the issue. The thought of spending $600+ to look for an issue on a car that was worth 9k was mind boggling to me. So I bought a battery maintainer and just kept charging the battery for months. But the battery was getting weaker from the repeated large drops in charge. I thought I'm either going to have to pay a mechanic or replace with a fresh battery every 9-12 months. Then I found out that these cars had an issue with the SiriusXM module draining the battery while it's parked. The solution was to pay Volvo $200 for a software update or to bypass the module is this fiber optic bypass loop. 30 mins and $10 later .. the battery charges from the alternator while driving and holds it charge over night!!! Wow! Problem solved .. saved 200-660 dollars easily! I'm so happy. ## Frequently Bought Together - Mellbree 2Pcs Fiber Optic Loop, Female and Male Fiber Optic Bypass Loop Adapter Connector Diagnostic Device Tool Compatible for Benz Audi Mercedes BMW VW Porsche Most Optical System - M&P USA Universal Fiber Optic Loop Bypass Loop Adapter Compatible with BMW, Mercedes & More - Velidy 2 PCS Fiber Most Optical Optic Loop Bypass Male Female Adapter for Benz Audi Mercedes BMW VW Porsche --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vu/products/388374685-mellbree-2pcs-fiber-optic-loop-female-and-male-fiber-optic](https://www.desertcart.vu/products/388374685-mellbree-2pcs-fiber-optic-loop-female-and-male-fiber-optic) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-08*