USB to 3-Pin 4-Pin PWM 5V Fan Power Adapter Cable | Qme

USB to 3-Pin / 4-Pin PWM 5V Sleeved Fan Power Adapter Connector Cable

Power your PC or case fans directly from a USB port with this versatile USB to 3-Pin / 4-Pin PWM 5V Sleeved Fan Power Adapter Connector Cable. Built with oxygen-free copper conductors for reliable signal and power transmission, this cable features a durable sleeved design that keeps your build looking clean and organized. The convenient on/off switch lets you control your fan without accessing your PC internals.

Key Features

• Universal Compatibility: Works with both standard 3-pin and 4-pin PWM fan connectors — ideal for case fans, CPU coolers, and more.
• USB 5V Power Source: Draws power directly from any USB port, eliminating the need for a dedicated motherboard header.
• Oxygen-Free Copper Construction: Ensures low resistance, stable current delivery, and long-term durability.
• Sleeved Cable Design: Braided sleeving protects the wiring and adds a clean, professional look to your setup.
• Built-In On/Off Switch: Easily toggle your connected fan on or off without unplugging the cable.
• Compact & Flexible: Lightweight and easy to route inside tight PC cases or for use with external USB fan setups.

Ideal For

• PC case fan upgrades and custom cooling builds
• Powering fans from USB hubs, power banks, or wall adapters
• DIY electronics and maker projects requiring 5V fan power
• Replacing or extending existing fan power connectors

Specifications

• Connector Type: USB (Type-A) to 3-Pin / 4-Pin PWM Fan
• Voltage: 5V DC
• Conductor Material: Oxygen-free copper
• Cable Style: Sleeved
• Switch: Inline on/off switch included
• Brand: Qme

For more information on electrical safety standards for consumer electronics accessories, visit the U.S. Consumer Product Safety Commission (CPSC).

Frequently Asked Questions

Q: What fan connectors does this USB fan power adapter cable support?

A: This USB fan power adapter cable supports both 3-pin and 4-pin PWM fan connectors, making it compatible with the vast majority of standard PC case fans and coolers that require a 5V power source.

Q: What is this USB to fan adapter cable made of?

A: The cable is constructed with oxygen-free copper conductors, which provide low electrical resistance, stable power delivery, and enhanced durability. The sleeved exterior protects the wiring and improves cable management inside your PC case or workspace.

Q: Can I use this adapter cable with a USB hub or power bank?

A: Yes! Since this cable draws 5V power from any standard USB Type-A port, it can be used with USB hubs, wall chargers, power banks, laptops, or desktop PCs — any USB 5V power source that can supply adequate current for your fan.

Q: What does the on/off switch on this cable do?

A: The inline on/off switch allows you to easily start or stop your connected fan without unplugging the USB cable. This is especially handy for external fan setups or situations where quick manual control is preferred.