--- product_id: 175339067 title: "CRJ 12V Step-Up USB to Dual PC Fans Power Adapter Cable - 24-inch (60cm), Black Sleeved - Full Fan Speed Adapter for 3-Pin/4-Pin Cooling Fans" brand: "crj electronics" price: "€ 18.79" currency: EUR in_stock: true reviews_count: 13 category: "Crj Electronics" url: https://www.desertcart.hr/products/175339067-crj-12v-step-up-usb-to-dual-pc-fans-power store_origin: HR region: Croatia --- # 12V step-up voltage booster 24-inch black nylon sleeved cable Dual 3/4-pin fan compatibility CRJ 12V Step-Up USB to Dual PC Fans Power Adapter Cable - 24-inch (60cm), Black Sleeved - Full Fan Speed Adapter for 3-Pin/4-Pin Cooling Fans **Brand:** crj electronics **Price:** € 18.79 **Availability:** ✅ In Stock ## Summary > ⚡ Power your cool like a pro — full speed, zero compromise! ## Quick Answers - **What is this?** CRJ 12V Step-Up USB to Dual PC Fans Power Adapter Cable - 24-inch (60cm), Black Sleeved - Full Fan Speed Adapter for 3-Pin/4-Pin Cooling Fans by crj electronics - **How much does it cost?** € 18.79 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/175339067-crj-12v-step-up-usb-to-dual-pc-fans-power) ## Best For - crj electronics enthusiasts ## Why This Product - Trusted crj electronics brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Sleek & Durable Design:** Premium black nylon sleeving with RoHS compliance for a professional look and long-lasting use. - • **Plug & Play Convenience:** No drivers needed—just connect and enjoy instant, reliable fan power anywhere USB is available. - • **Full-Speed USB Fan Power:** Boosts USB 5V to 12V for max fan RPM and silent cooling performance. - • **Versatile Cooling Solution:** Ideal for PCs, gaming consoles, AV receivers, and network routers needing airflow upgrades. - • **Universal Fan Compatibility:** Supports any 3-pin or 4-pin PC fan, perfect for custom cooling setups. ## Overview The CRJ 12V Step-Up USB to Dual PC Fans Power Adapter Cable transforms any USB Type-A port into a full 12V power source, enabling dual 3-pin or 4-pin PC fans to run at optimal speeds. With a built-in voltage booster and a durable 24-inch black nylon sleeved cable, it offers a sleek, versatile, and plug-and-play solution to enhance cooling for PCs, gaming consoles, AV equipment, and network devices. Rated highly for silent operation and broad compatibility, this adapter is a must-have for millennial professionals seeking efficient, customizable airflow without bulky USB fans. ## Description The CRJ USB to Dual Fan Power Adapter Cable stands out as the first full-speed USB adapter designed to power computer fans, offering unparalleled flexibility in utilizing almost any fan, PWM controller, or compatible device. Equipped with a high-efficiency voltage step-up module, this cable delivers 12V power ensuring that your existing PC fans operate at optimal speeds for maximum cooling. Encased in durable, high-density black nylon sleeving with sleek all-black connectors, the 24-inch cable ensures a professional and discreet setup. Its versatility extends beyond traditional PC use, making it ideal for enhancing cooling in TV or networking cabinets, consoles, AV receivers, and other electronic devices that benefit from improved airflow. This adapter cable provides a superior alternative to fixed USB fans by allowing users to select from a broader range of cooling solutions to meet their specific needs. Review: Plug & Play Ready! - Work great to run my 2 CPU cooling fans! Review: Perfect if you need a small fan! - I have more than my fair share of PC fans and in a flavor of sizes (mostly 120mm and 140mm). I actually use them to keep network equipment cool at my parents house (one is pointed to an Arris SB8200 modem, another for the Asus AC68U). The modem tends to have connectivity issues with lots of uncorrectables when left running as is. After putting a fan on it, blowing directly onto the heatsink, the number of uncorrectables dropped significantly. Since there's no way to easily attach a fan to the modem, I used this adapter and an old USB charger to power up two Cooler Master fans. Even at max RPM (about 1100RPM), the fans are completely silent and keep my parents network problem free. This adapter will force any 2/3/4 pin fan to operate at full speed, so be mindful if this will be in a sound sensitive environment. ## Features - Universal Fan Power Solution: Easily power any 3-pin or 4-pin PC cooling fans directly from a USB Type-A port, ensuring full 12V fan speeds for effective cooling. - Integrated Voltage Booster: Built-in 12V step-up circuit boosts standard USB 5V output to 12V (0.4A max), making it compatible with PWM controllers and fan hubs for versatile use. - Cooling Versatility: Ideal for enhancing airflow in electronic devices with USB power output, such as gaming consoles, AV receivers, and network routers. - Robust Construction: RoHS compliant with all-black connectors and high density black nylon sleeving, offering durability and a sleek look with minimal wire exposure. - Cable length (including connectors) is 24 inches (60cm) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B081K8LBH3 | | Best Sellers Rank | #3,470 in USB Cables | | Brand | CRJ Electronics | | Brand Name | CRJ Electronics | | Cable Type | USB | | Color | Black | | Compatible Devices | Desktop | | Compatible Phone Models | No Compatible Phone Models | | Connectivity Technology | USB | | Connector Gender | Male-to-Female | | Connector Type | USB Type A | | Customer Package Type | FFP | | Customer Reviews | 4.7 out of 5 stars 869 Reviews | | Data Transfer Rate | 0.4 Megabits Per Second | | Gauge | 22 | | Indoor Outdoor Usage | Indoor, Outdoor | | Item Shape | Round | | Item Weight | 0.03 Kilograms | | Manufacturer | CRJ Electronics | | Maximum Current | 400 Milliamps | | Maximum Voltage | 12 Volts | | Model | 4050 | | Model Name | USB 12V to Dual 4-Pin Fan Power Adapter Cable | | Number of Items | 1 | | Number of Pins | 4 | | Other Special Features of the Product | Braided | | Outer Material | Nylon | | Part Number | 4050 | | Recommended Uses For Product | Enhancing airflow in electronic devices with USB power output, such as gaming consoles, AV receivers, and network routers | | Special Feature | Braided | | Specification Met | RoHS | | UPC | 720355064303 | | Unit Count | 1 Count | | Wattage | 5 watts | ## Product Details - **Brand:** CRJ Electronics - **Cable Type:** USB - **Compatible Devices:** Desktop - **Connector Type:** USB Type A - **Special Feature:** Braided ## Images ![CRJ 12V Step-Up USB to Dual PC Fans Power Adapter Cable - 24-inch (60cm), Black Sleeved - Full Fan Speed Adapter for 3-Pin/4-Pin Cooling Fans - Image 1](https://m.media-amazon.com/images/I/81-cDf+-MAL.jpg) ![CRJ 12V Step-Up USB to Dual PC Fans Power Adapter Cable - 24-inch (60cm), Black Sleeved - Full Fan Speed Adapter for 3-Pin/4-Pin Cooling Fans - Image 2](https://m.media-amazon.com/images/I/81wbkYtIA-L.jpg) ![CRJ 12V Step-Up USB to Dual PC Fans Power Adapter Cable - 24-inch (60cm), Black Sleeved - Full Fan Speed Adapter for 3-Pin/4-Pin Cooling Fans - Image 3](https://m.media-amazon.com/images/I/81-4JSKPJBL.jpg) ![CRJ 12V Step-Up USB to Dual PC Fans Power Adapter Cable - 24-inch (60cm), Black Sleeved - Full Fan Speed Adapter for 3-Pin/4-Pin Cooling Fans - Image 4](https://m.media-amazon.com/images/I/71SD-kgDm6L.jpg) ![CRJ 12V Step-Up USB to Dual PC Fans Power Adapter Cable - 24-inch (60cm), Black Sleeved - Full Fan Speed Adapter for 3-Pin/4-Pin Cooling Fans - Image 5](https://m.media-amazon.com/images/I/81mXg0YXxjL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Questions & Answers **Q: For PWM fans, how do you control the speed?** A: There is no speed control with this. It's either on or off. **Q: Will it allow 5V fans to work at full speed?** A: it will burn them up because this is putting out 12v **Q: Will this work for a 2-pin fan?** A: Yes, you'll just have some pens you don't plug into **Q: Is there one for 3 connectors instead of two?** A: No it doesn’t matter ## Customer Reviews ### ⭐⭐⭐⭐⭐ Plug & Play Ready! *by K***S on December 29, 2025* Work great to run my 2 CPU cooling fans! ### ⭐⭐⭐⭐⭐ Perfect if you need a small fan! *by W***A on November 1, 2024* I have more than my fair share of PC fans and in a flavor of sizes (mostly 120mm and 140mm). I actually use them to keep network equipment cool at my parents house (one is pointed to an Arris SB8200 modem, another for the Asus AC68U). The modem tends to have connectivity issues with lots of uncorrectables when left running as is. After putting a fan on it, blowing directly onto the heatsink, the number of uncorrectables dropped significantly. Since there's no way to easily attach a fan to the modem, I used this adapter and an old USB charger to power up two Cooler Master fans. Even at max RPM (about 1100RPM), the fans are completely silent and keep my parents network problem free. This adapter will force any 2/3/4 pin fan to operate at full speed, so be mindful if this will be in a sound sensitive environment. ### ⭐⭐⭐⭐⭐ Full Power Case Fans *by J***3 on April 10, 2025* Used for a Be quite case fan I mounted to an xbox. It works well and provides power for what appears to be full power, compared to my be quite fans in my PC. ## Frequently Bought Together - CRJ 12V Step-Up USB to Dual PC Fans Power Adapter Cable - 24-inch (60cm), Black Sleeved - Full Fan Speed Adapter for 3-Pin/4-Pin Cooling Fans - Noctua NF-P12 redux-1700 PWM, High Performance Cooling Fan, 4-Pin, 1700 RPM (120mm, Grey) - Noctua NA-FC1, 4-Pin PWM Fan Controller (Black) --- ## 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.hr/products/175339067-crj-12v-step-up-usb-to-dual-pc-fans-power](https://www.desertcart.hr/products/175339067-crj-12v-step-up-usb-to-dual-pc-fans-power) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-05-19*