USB to 4-Pin 5V–12V Boost Cable for Computer Cooling Fan
USB to 4-Pin 5V–12V Boost Cable for Computer Cooling Fan
Power Your 12V Cooling Fan from Any USB Port
The OULLX USB to 4-Pin Cooling Fan Boost Cable is a smart, compact power adapter that converts a standard 5V USB output to a full 12V supply — giving your small 4-pin chassis fan the voltage it needs to spin at full speed. No more underpowered fans or sluggish airflow; just plug in and let the built-in boost board do the work.
Made in Mainland China.
Key Features
- 5V to 12V Boost Conversion: Integrated boost circuit steps up the USB 5V input to a stable 12V output, fully compatible with standard 4-pin computer cooling fans.
- USB-A Male Connector: Plugs into any USB port — laptop, desktop, USB hub, or power bank — for flexible placement.
- Small 4-Pin Female Connector: Fits directly onto standard small 4-pin chassis fan headers without any adapter.
- 22AWG Tin-Plated Copper Wire: High-conductivity, low-resistance wire ensures efficient power delivery with minimal heat build-up.
- Choice of Length: Available in 30 cm or 50 cm to suit different setups and cable management needs.
- Sleek Black Finish: Clean, understated look that blends seamlessly inside any chassis or on your desk.
- No Assembly Required: Ready to use straight out of the package — plug and play.
Specifications
| Input Voltage | 5V (USB) |
| Output Voltage | 12V (via boost board) |
| Connector Type | USB-A Male to Small 4-Pin Female |
| Wire Gauge | 22AWG |
| Conductor Material | Tin-Plated Copper |
| Cable Color | Black |
| Available Lengths | 30 cm / 50 cm |
| Assembly Required | No |
| Country of Origin | Mainland China |
Who Is This For?
Perfect for PC enthusiasts, makers, and DIY builders who want to power a 12V cooling fan from a USB source — whether for a custom enclosure, a Raspberry Pi project, a mini-ITX build, or simply an extra chassis fan powered externally.
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Frequently Asked Questions
Q: Will this USB to 4-pin boost cable work with any standard 12V computer cooling fan?
A: Yes — as long as your cooling fan uses a small 4-pin connector and is rated for 12V operation, this cable is compatible. The integrated boost board steps up the USB 5V input to a stable 12V output, giving the fan its required operating voltage.
Q: What is the difference between the 30 cm and 50 cm versions?
A: The only difference is cable length. Choose 30 cm for compact, close-proximity setups where cable tidiness is a priority, and 50 cm when you need extra reach — for example, when the USB port is further away from the fan's mounting location.
Q: Is the 22AWG tin-plated copper wire safe for continuous use?
A: Yes. 22AWG tin-plated copper wire is rated for the current levels involved in powering a single small 4-pin chassis fan. The tin plating also adds corrosion resistance, contributing to long-term durability during continuous operation.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.