{"product_id":"usb-5v-to-12v-9v-dc-power-boost-cable-55x21mm-router-modem-adapter","title":"USB 5V to 12V\/9V DC Boost Cable – 5.5×2.1mm Power Adapter","description":"\u003ch2\u003ePower Your Router, WIFI Modem \u0026amp; Fan from Any USB Power Bank\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eUSB DC Power Boost Cable\u003c\/strong\u003e is a compact voltage step-up converter that takes a standard 5V USB input and boosts it to either \u003cstrong\u003e9V or 12V DC output\u003c\/strong\u003e via a 5.5×2.1mm barrel connector. It's the perfect solution for running routers, WIFI modems, small fans, and other 9V\/12V devices directly from a USB power bank, laptop, or USB charger — no bulky wall adapter needed.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage Boost:\u003c\/strong\u003e Converts USB 5V input to DC 9V or 12V output\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUniversal 5.5×2.1mm Barrel Connector:\u003c\/strong\u003e Fits most routers, modems, fans, and DC-powered devices\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Current:\u003c\/strong\u003e Up to 700mA — ideal for low-to-mid power devices\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Lightweight:\u003c\/strong\u003e Easy to carry in a bag or travel kit\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePowerbank Compatible:\u003c\/strong\u003e Keep your router or modem running anywhere with a standard USB power bank\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupply Voltage:\u003c\/strong\u003e DC 5V \/ 9V \/ 12V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlug Size:\u003c\/strong\u003e 5.5×2.1mm DC barrel jack\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo High-Concern Chemicals:\u003c\/strong\u003e Safe materials, no hazardous substances\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat Can You Power With It?\u003c\/h3\u003e\n\u003cp\u003eThis USB boost cable is compatible with a wide range of 9V or 12V DC devices, including:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePortable WiFi routers \u0026amp; travel routers\u003c\/li\u003e\n  \u003cli\u003eADSL \/ broadband modems\u003c\/li\u003e\n  \u003cli\u003eSmall DC cooling fans\u003c\/li\u003e\n  \u003cli\u003eLED strip controllers\u003c\/li\u003e\n  \u003cli\u003eOther low-power 9V\/12V electronics with a 5.5×2.1mm DC jack\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eGreat for Travel \u0026amp; Off-Grid Use\u003c\/h3\u003e\n\u003cp\u003eWhether you're working remotely, camping, or traveling, this cable lets you keep essential devices running using a power bank you already own. No need to carry multiple chargers or search for wall outlets.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eYou May Also 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.energystar.gov\/products\" target=\"_blank\" rel=\"noopener\"\u003eENERGY STAR product efficiency guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What devices are compatible with this USB DC power boost cable?\u003c\/h4\u003e\n\u003cp\u003eA: This cable is compatible with any device that requires a 9V or 12V DC input via a standard 5.5×2.1mm barrel jack — including portable routers, WiFi modems, small cooling fans, and similar low-power electronics. Always verify your device's voltage and current requirements before use.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I use this cable with a standard USB power bank?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The cable is designed specifically for use with USB power banks, USB wall chargers, and laptop USB ports that output 5V. It steps up the voltage to 9V or 12V DC, allowing you to run compatible devices without a traditional wall adapter.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the maximum current output of this boost cable?\u003c\/h4\u003e\n\u003cp\u003eA: The cable supports up to 700mA output current. It is best suited for low-to-medium power devices. High-power devices that require more than 700mA may not function correctly — always check your device's power specifications.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What devices are compatible with this USB DC power boost cable?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This cable is compatible with any device that requires a 9V or 12V DC input via a standard 5.5×2.1mm barrel jack — including portable routers, WiFi modems, small cooling fans, and similar low-power electronics. Always verify your device's voltage and current requirements before use.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use this cable with a standard USB power bank?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! The cable is designed specifically for use with USB power banks, USB wall chargers, and laptop USB ports that output 5V. 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