Power Your 12V PC Fan from Any USB Port

The USB to 4-Pin PWM Fan Power Adapter Cable is the ultimate compact solution for anyone who wants to run a standard 12V chassis or CPU fan directly from a 5V USB power source. Whether you're building a custom cooling pad, repurposing a PC case fan, or adding extra airflow to a DIY project, this boost converter cable bridges the gap effortlessly — no separate power supply needed.

Key Features

5V to 12V Boost Conversion: Converts standard USB 5V input to a stable 12V output, giving your 4-pin PWM fan full operating voltage.
Adjustable Speed Switch: Built-in inline switch lets you dial in fan speed for the perfect balance of airflow and noise.
4-Pin PWM Output: Compatible with most standard PC chassis fans and CPU cooling fans using the industry-standard 4-pin connector.
All-Copper Core Wiring: High-conductivity copper conductors ensure minimal energy loss and reliable, long-lasting performance.
PVC Insulation: Durable PVC outer jacket (OD 3.5mm) protects against wear and abrasion.
Compact 35cm Length: Neat, manageable cable length keeps your build tidy without unnecessary slack.
Max 11W Output: Handles up to 11 watts — more than enough for most standard PC cooling fans.

Specifications

Input Voltage	5V (USB)
Output Voltage	12V
Maximum Power	11W
Cable Length	~35cm
Wire Outer Diameter	3.5mm
Insulation Material	PVC
Input Connector	Standard USB-A
Output Connector	4-Pin PWM Fan Header

Perfect For

Powering PC case fans from a USB hub or port
DIY laptop cooling pad modifications
Custom ventilation and airflow projects
Repurposing old PC fans for creative builds

Made in Mainland China.

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For general electrical safety guidance, visit the U.S. Consumer Product Safety Commission (CPSC).

Frequently Asked Questions

Q: Will this USB to 4-pin PWM adapter cable work with any standard PC case fan?

A: Yes — as long as your fan uses a standard 4-pin PWM connector (the most common type on desktop PC chassis and CPU fans), this cable will power it from any USB 5V source and boost it to the 12V your fan needs to run at full capacity.

Q: Can I use this cable to power a fan from a power bank or USB wall charger?

A: Absolutely. Any USB 5V power source — including power banks, USB wall adapters, and computer USB ports — will work, provided the source can supply at least the wattage your fan requires (up to the 11W maximum supported by this cable).

Q: What does the adjustable switch do?

A: The inline speed-adjustment switch lets you manually control how fast the fan spins, so you can reduce noise when maximum airflow isn't needed or crank it up when you need extra cooling performance.

Made with care

Great value

Elegant design

Quality materials

This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.

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