{"product_id":"usb-to-4pin-pwm-fan-power-adapter-cable-5v-12v-boost-converter","title":"USB to 4-Pin PWM Fan Adapter Cable – 5V to 12V Boost","description":"\n\u003ch2\u003ePower Your 12V PC Fan from Any USB Port\u003c\/h2\u003e\n\u003cp\u003eThe 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.\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 Converts standard USB 5V input to a stable 12V output, giving your 4-pin PWM fan full operating voltage.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Speed Switch:\u003c\/strong\u003e Built-in inline switch lets you dial in fan speed for the perfect balance of airflow and noise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e4-Pin PWM Output:\u003c\/strong\u003e Compatible with most standard PC chassis fans and CPU cooling fans using the industry-standard 4-pin connector.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAll-Copper Core Wiring:\u003c\/strong\u003e High-conductivity copper conductors ensure minimal energy loss and reliable, long-lasting performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePVC Insulation:\u003c\/strong\u003e Durable PVC outer jacket (OD 3.5mm) protects against wear and abrasion.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact 35cm Length:\u003c\/strong\u003e Neat, manageable cable length keeps your build tidy without unnecessary slack.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax 11W Output:\u003c\/strong\u003e Handles up to 11 watts — more than enough for most standard PC cooling fans.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5V (USB)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e11W\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCable Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~35cm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWire Outer Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePVC\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Connector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard USB-A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Connector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4-Pin PWM Fan Header\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePowering PC case fans from a USB hub or port\u003c\/li\u003e\n  \u003cli\u003eDIY laptop cooling pad modifications\u003c\/li\u003e\n  \u003cli\u003eCustom ventilation and airflow projects\u003c\/li\u003e\n  \u003cli\u003eRepurposing old PC fans for creative builds\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eLooking for more electronics and cables? Check out our related products:\u003cbr\u003e\n  \u003ca href=\"\/products\/1-channel-relay-module-dc-3-3v-24v-optocoupler-arduino\"\u003e1-Channel Relay Module DC 3.3V–24V Optocoupler for Arduino\u003c\/a\u003e\u003cbr\u003e\n  \u003ca href=\"\/products\/0-25mm-1000-turn-precision-copper-inductor-coil-diy-electronics\"\u003e0.25mm 1000-Turn Precision Copper Inductor Coil for DIY Circuits\u003c\/a\u003e\n\u003c\/p\u003e\n\n\u003cp\u003eFor general electrical safety guidance, visit the U.S. Consumer Product Safety Commission (CPSC).\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Will this USB to 4-pin PWM adapter cable work with any standard PC case fan?\u003c\/h4\u003e\n\u003cp\u003eA: 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.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I use this cable to power a fan from a power bank or USB wall charger?\u003c\/h4\u003e\n\u003cp\u003eA: 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).\u003c\/p\u003e\n\u003ch4\u003eQ: What does the adjustable switch do?\u003c\/h4\u003e\n\u003cp\u003eA: 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.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Will this USB to 4-pin PWM adapter cable work with any standard PC case fan?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"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.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use this cable to power a fan from a power bank or USB wall charger?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Absolutely. 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