{"product_id":"usb-to-4-pin-pwm-fan-adapter-cable-5v-to-12v-boost","title":"USB to 4-Pin PWM Fan Adapter Cable – 5V to 12V Boost","description":"\u003ch2\u003ePower Your PC Fan from Any USB Port – 5V to 12V Boost Converter Cable\u003c\/h2\u003e\n\u003cp\u003eThis compact USB to 4-Pin PWM fan power adapter cable lets you run a standard 12V computer chassis or CPU fan directly from a USB 5V power source. Built-in boost circuitry steps up the voltage from 5V to 12V, while the onboard adjustable speed switch gives you direct control over fan performance — no motherboard required.\u003c\/p\u003e\n\n\u003cp\u003eWhether you're building a custom laptop cooling pad, repurposing a spare case fan, or simply need a flexible USB-powered fan solution, this adapter cable makes it quick and easy. Made in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e5V to 12V Boost Conversion\u003c\/strong\u003e – Powers standard 12V PC fans from any USB 5V source\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e4-Pin PWM Output\u003c\/strong\u003e – Compatible with standard chassis fans and CPU fans\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Speed Switch\u003c\/strong\u003e – Built-in dial lets you fine-tune fan speed on the fly\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAll-Copper Core Wire\u003c\/strong\u003e – Ensures stable current delivery and reduced heat build-up\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePVC Insulation\u003c\/strong\u003e – Durable, flexible outer sleeve for long-lasting use\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Lightweight\u003c\/strong\u003e – ~35cm cable length, easy to route in tight spaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Voltage:\u003c\/strong\u003e 5V (USB)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Voltage:\u003c\/strong\u003e 12V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Power:\u003c\/strong\u003e 11W\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCable Length:\u003c\/strong\u003e ~35cm (approx. 13.8 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWire Outer Diameter:\u003c\/strong\u003e OD 3.5mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsulation Material:\u003c\/strong\u003e PVC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Connector:\u003c\/strong\u003e USB Type-A (5V)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Connector:\u003c\/strong\u003e 4-Pin PWM fan connector\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eGreat For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePowering PC case or CPU fans via USB when a PSU isn't available\u003c\/li\u003e\n  \u003cli\u003eDIY laptop cooling pad builds using standard 12V fans\u003c\/li\u003e\n  \u003cli\u003eWorkbench fan testing without a full power supply\u003c\/li\u003e\n  \u003cli\u003eCustom PC modding and low-voltage fan projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/clip-on-car-fan-led-display-199-speeds-usb-type-c\"\u003eClip-On Car Fan LED Display 199 Speeds | USB \u0026amp; Type-C\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/electromagnetic-induction-tester-coil-motherboard-fault-detector\"\u003eElectromagnetic Induction Tester – Coil \u0026amp; Circuit Fault Detector\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0-10\/0-12\/0-25 Bar | DIY Tool\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Can this USB to 4-Pin PWM cable power any standard 12V PC fan?\u003c\/h4\u003e\n\u003cp\u003eA: Yes — as long as your fan uses the standard 4-pin PWM connector and draws no more than 11W (the cable's maximum output power), it will work with this adapter. It's compatible with most common chassis fans and CPU fans.\u003c\/p\u003e\n\u003ch4\u003eQ: Does the adjustable switch actually change fan speed?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The onboard adjustable switch allows you to regulate the fan speed directly through the cable, giving you convenient speed control without needing a motherboard or fan controller hub.\u003c\/p\u003e\n\u003ch4\u003eQ: What USB power sources are compatible with this cable?\u003c\/h4\u003e\n\u003cp\u003eA: Any standard USB 5V power source works — including PC USB ports, USB wall chargers, and USB power banks — as long as the source can supply enough current to meet the fan's wattage needs (up to 11W maximum output).\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Can this USB to 4-Pin PWM cable power any standard 12V PC fan?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes — as long as your fan uses the standard 4-pin PWM connector and draws no more than 11W (the cable's maximum output power), it will work with this adapter. 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