Used DC Cooling Fan 5V 40 x 40 mm
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Prices updated: 13 Oct 2026
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About this product
A used 5V DC cooling fan with a 40 x 40 mm frame, suited to ventilating small electronics projects and enclosures. The listing notes that the fan is used and that thickness varies from one unit to another, so confirm the fit before mounting.
Specifications
- Voltage
- 5 V DC
- Size
- 40 x 40 mm
- Condition
- Used
- Thickness
- Varies by piece
Frequently asked questions
Can I power this fan from a 5V supply?
Yes, it is rated at 5V DC. Use a regulated 5V supply and do not exceed the rated voltage.
How do I wire a DC fan?
Connect the positive lead to 5V and the negative lead to GND, following the labels or colours on the fan. Used fans may have worn wires, so check continuity before connecting.
