--- product_id: 138052450 title: "OPSFALCON 2 Pack USB to 4-Pin Molex Fan Power Cable, 5V USB Port to 12V Molex Computer PC Fan Adaptor Connector Cable Cord Wire" brand: "opsfalcon" price: "69.53 DT" currency: TND in_stock: true reviews_count: 8 category: "Opsfalcon" url: https://www.desertcart.tn/products/138052450-opsfalcon-2-pack-usb-to-4-pin-molex-fan-power store_origin: TN region: Tunisia --- # 11.8-inch cable length for flexible setups 5V USB to 12V Molex power conversion Supports PC fan cooling with reduced speed OPSFALCON 2 Pack USB to 4-Pin Molex Fan Power Cable, 5V USB Port to 12V Molex Computer PC Fan Adaptor Connector Cable Cord Wire **Brand:** opsfalcon **Price:** 69.53 DT **Availability:** ✅ In Stock ## Summary > ⚡ Power your PC fans smarter, not harder! ## Quick Answers - **What is this?** OPSFALCON 2 Pack USB to 4-Pin Molex Fan Power Cable, 5V USB Port to 12V Molex Computer PC Fan Adaptor Connector Cable Cord Wire by opsfalcon - **How much does it cost?** 69.53 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/138052450-opsfalcon-2-pack-usb-to-4-pin-molex-fan-power) ## Best For - opsfalcon enthusiasts ## Why This Product - Trusted opsfalcon brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safe & Durable:** Pure copper conductor and 80°C rated insulation ensure reliable, long-lasting performance. - • **Compact & Flexible:** 11.8-inch length with tangle-free PVC insulation for neat, adaptable cable management. - • **Energy-Smart Cooling:** Reduces PSU load by diverting fan power to USB, optimizing your system’s energy efficiency. - • **Dual-Pack Convenience:** Two cables included for multi-fan setups or backup power solutions. - • **Universal Compatibility:** Connects any 4-pin Molex 12V fan to a standard 5V USB port effortlessly. ## Overview The OPSFALCON 2 Pack USB to 4-Pin Molex Fan Power Cables convert 5V USB power to 12V Molex connectors, enabling you to power 12V PC fans directly from USB ports. Each 11.8-inch cable features pure copper wiring and durable PVC insulation, designed for indoor use with a max operating temperature of 80°C. While fan speed is halved due to voltage differences, this adapter reduces PSU strain and supports efficient cooling setups, perfect for tech-savvy professionals optimizing their rigs. ## Description Specifications: Product Name: USB to 4-pin Molex fan power adapter cable Function: change the 5V USB port to 12V 4 pin port for electricity use Connector: one is USB port, another one is 4 pin Molex port Cable Length: 11.8inch Cable Type: 22AWG Cable Diameter: 0.12inch Insulation Material: PVC Conductor Material: pure copper Work temperature: 80 centigrade Notice: 1. Fan must have a start voltage at or below 5V, it will not work if not. 2. The fan speed will be reduced by 50% if computer fan uses this USB adapter cable, because rated voltage of fan is 12V. Package Includes: 2pcs USB to 4-Pin Molex Fan Power Cables Review: Good quality. Works as advertised. - Good quality. Works as advertised. Review: Good for diverting power from ur PSU or if ur PSU cant use that many fans. (I have 10) - Works...if you have a setup like me...i have 12v connector fans hooked up to my wall instead of my PSU now and my fan controller and water cooling pump as well this saves 300ish watts maybe more (strain) on ur psu capacitors. Allows me to use my computer's power for important hardware and also allows it to cool off (as i set all fans/controls to "wind down" and cutoff 3mins after computer is offline. Real neat setup. No pics sry xD. ## Features - This cable is 5V USB port to 4-pin Molex port - Connector: One is USB port, another one is 4 pin Molex port - Cable length: 11.8inch - Please note rotating speed of your fan will be reduced by 50% if you use 5V power, because rated voltage of fan is 12V, and your fan must have a start voltage at or below 5V, it will not work if not - 2 Pack USB to 4-Pin Molex Fan Power Cable, 5V USB Port to 12V Molex Computer PC Fan Adaptor Connector Cable Cord Wire ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07PR4T3S8 | | Best Sellers Rank | #8,985 in USB Cables | | Brand Name | OPSFALCON | | Cable Type | USB | | Color | Black | | Compatible Devices | PC | | Compatible Phone Models | No Compatible Phone Models | | Connector Gender | Male-to-Male | | Connector Type | Usb | | Customer Package Type | basic shipping package | | Customer Reviews | 4.3 4.3 out of 5 stars (79) | | Gauge | 22.0 | | Indoor Outdoor Usage | Indoor, Outdoor | | Item Shape | Round | | Item Weight | 0.02 Kilograms | | Manufacturer | Aiyide | | Maximum Voltage | 12 Volts | | Model | AYD-USB-Molex-N | | Model Name | AYD-USB-Molex-N | | Number of Items | 2 | | Number of Pins | 4 | | Other Special Features of the Product | Tangle Free | | Outer Material | Polyvinyl Chloride (PVC) | | Recommended Uses For Product | Powering 12V computer fans using a 5V USB port | | UPC | 721821352351 | | Unit Count | 2.0 Count | ## Product Details - **Brand:** OPSFALCON - **Cable Type:** USB - **Compatible Devices:** PC - **Connector Type:** Usb - **Special Feature:** Tangle Free ## Images ![OPSFALCON 2 Pack USB to 4-Pin Molex Fan Power Cable, 5V USB Port to 12V Molex Computer PC Fan Adaptor Connector Cable Cord Wire - Image 1](https://m.media-amazon.com/images/I/51XALXAmSYL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good quality. Works as advertised. *by N***B on September 11, 2025* Good quality. Works as advertised. ### ⭐⭐⭐⭐⭐ Good for diverting power from ur PSU or if ur PSU cant use that many fans. (I have 10) *by E***C on December 15, 2019* Works...if you have a setup like me...i have 12v connector fans hooked up to my wall instead of my PSU now and my fan controller and water cooling pump as well this saves 300ish watts maybe more (strain) on ur psu capacitors. Allows me to use my computer's power for important hardware and also allows it to cool off (as i set all fans/controls to "wind down" and cutoff 3mins after computer is offline. Real neat setup. No pics sry xD. ### ⭐ Does not work well *by K***X on August 5, 2021* The fans baaaaaaaaaaaaaaaaaaaaaaaaaaaarely spin up. Complete junk. ## Frequently Bought Together - 2 Pack USB to 4-Pin Molex Fan Power Cable, 5V USB Port to 12V Molex Computer PC Fan Adaptor Connector Cable Cord Wire - AC Infinity MULTIFAN S3, Quiet 120mm USB Fan, UL-Certified for Receiver DVR PlayStation Xbox Computer Cabinet Cooling --- ## 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.tn/products/138052450-opsfalcon-2-pack-usb-to-4-pin-molex-fan-power](https://www.desertcart.tn/products/138052450-opsfalcon-2-pack-usb-to-4-pin-molex-fan-power) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-05-30*