USB Fan Speed Controller DC 4V–12V Multi-Gear Quiet 5W
USB Fan Speed Controller DC 4V–12V Multi-Gear Quiet 5W
Take Full Control of Your USB Fan's Speed
The USB Fan Speed Controller by Gmarty lets you fine-tune your USB fan's airflow with ease. Whether you're in a home office, college dormitory, or workspace, this compact multi-gear regulator gives you the flexibility to set your fan exactly where you want it — from a whisper-quiet breeze to full-power cooling.
Why You'll Love It
- Multi-Gear Speed Control: Smoothly adjust fan speed across multiple positions to find your ideal airflow.
- Built-In Boost Board: The internal step-up circuit increases voltage to the fan motor on higher gears, delivering noticeably stronger airflow when you need it most.
- Quiet Operation: Engineered for minimal noise, making it ideal for quiet environments like offices and bedrooms.
- Wide Voltage Range: Accepts DC 4V–12V input and delivers DC 2.5V–8.0V output, compatible with most standard USB fans.
- Compact & Portable: At just 50×44×18mm, this lightweight controller slips easily into a bag or drawer.
- Broad Temperature Tolerance: Tested and rated for operating temperatures from -40°C to 85°C.
Technical Specifications
| Brand | Gmarty |
| Working Voltage | DC 4V – 12V |
| Output Voltage | DC 2.5V – 8.0V |
| Rated Power | 5W (do not overload) |
| Test Temperature Range | -40°C to 85°C |
| Dimensions | 50 × 44 × 18 mm |
| Country of Origin | Made in Mainland China |
What's in the Box
- 1 × USB Fan Speed Controller
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Frequently Asked Questions
Q: What type of USB fans is this speed controller compatible with?
A: This USB fan speed controller is compatible with most standard USB-powered fans that operate within the DC 4V–12V input range. It works especially well with two-position fans, where the internal boost board steps up voltage to the motor on the second gear for increased airflow.
Q: Can I use this USB fan speed controller safely for extended periods?
A: Yes, this controller is rated at 5W and tested across a wide temperature range (-40°C to 85°C), making it suitable for extended use. Just ensure you do not exceed the 5W rated power limit to avoid overloading the device.
Q: How do I use the multi-gear speed regulator?
A: Simply connect your USB fan to the controller, plug it into a USB power source (DC 4V–12V), and use the gear selector to adjust the fan speed. The output voltage ranges from 2.5V to 8.0V, allowing you to dial in the exact airflow level you need.
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.