{"product_id":"usb-5v-to-12v-9v-step-up-boost-power-cable-5-5x2-1mm-dc-router-modem","title":"USB 5V to 12V\/9V Boost Power Cable – 5.5x2.1mm DC Converter","description":"\u003ch2\u003ePower Your Router, Modem \u0026amp; More from Any USB Power Bank\u003c\/h2\u003e\n\u003cp\u003eTired of hunting for a wall outlet to run your router, modem, WiFi extender, or small fan? This compact \u003cstrong\u003eUSB DC Step-Up Boost Power Cable\u003c\/strong\u003e converts your standard 5V USB output (from a power bank, laptop, or USB charger) up to \u003cstrong\u003e12V or 9V DC\u003c\/strong\u003e — delivered via a \u003cstrong\u003e5.5×2.1mm barrel connector\u003c\/strong\u003e. It's the ideal portable power solution for travel, emergency backup, or off-grid setups.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStep-Up Boost Conversion:\u003c\/strong\u003e Efficiently boosts a 5V USB input to a stable 9V or 12V DC output (select the voltage that matches your device).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUniversal 5.5×2.1mm Barrel Plug:\u003c\/strong\u003e Compatible with most routers, modems, WiFi repeaters, small fans, and other 12V\/9V DC-powered devices.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB-A Input:\u003c\/strong\u003e Plugs directly into any standard USB port — power bank, wall adapter, car charger, or laptop USB port.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Portable:\u003c\/strong\u003e Lightweight cable design — toss it in your bag and stay connected anywhere.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStable Power Output:\u003c\/strong\u003e Built-in boost converter circuit ensures consistent, regulated voltage delivery to protect your devices.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Works with routers, modems, WiFi adapters, small cooling fans, LED strips, and more that run on 9V or 12V DC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput:\u003c\/strong\u003e USB-A (5V DC)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput:\u003c\/strong\u003e 9V DC \/ 12V DC (select variant)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnector:\u003c\/strong\u003e 5.5mm outer diameter × 2.1mm inner pin barrel plug\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Step-Up Boost Power Cable\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eRunning a router or modem from a power bank during outages\u003c\/li\u003e\n  \u003cli\u003ePowering WiFi extenders in locations without a nearby outlet\u003c\/li\u003e\n  \u003cli\u003eSupplying 12V to small fans or LED devices via USB\u003c\/li\u003e\n  \u003cli\u003eTravel, camping, emergency preparedness, and off-grid connectivity\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products\u003c\/h3\u003e\n\u003cp\u003eYou might also be interested in:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10-pack-rubber-strain-relief-cord-boot-protector-sleeves-4-6-5-2-6mm\"\u003e10-Pack Rubber Strain Relief Cord Boot Protectors 4.6–6mm\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/waterproof-cable-gland-set-pg7-pg9-nylon-connectors-10-pack\"\u003e10-Pack Waterproof Cable Glands PG7 PG9 Nylon Connectors\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/25-in-1-precision-magnetic-screwdriver-set-pro-repair-tool-kit\"\u003e25-in-1 Precision Magnetic Screwdriver Set | Pro Repair Kit\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 step-up boost power cable?\u003c\/h4\u003e\n\u003cp\u003eA: This cable is compatible with any device that operates on 9V or 12V DC and uses a standard 5.5×2.1mm barrel connector — including most home routers, modems, WiFi repeaters, small desk fans, LED strips, and other low-power DC electronics. Always verify your device's voltage requirement before use.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I use this cable with a regular power bank?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The cable is designed to plug into any standard USB-A port, including power banks, wall adapters, car chargers, and laptop USB ports. The built-in boost converter steps the 5V USB output up to your required 9V or 12V, so you can power your devices without a wall outlet.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is the 5.5×2.1mm barrel connector the right size for my router?\u003c\/h4\u003e\n\u003cp\u003eA: The 5.5mm outer \/ 2.1mm inner barrel connector is the most widely used DC power connector for consumer routers, modems, and networking equipment. Check your device's power port size before purchasing to confirm compatibility. If your device uses a different barrel size, it may require an adapter.\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 step-up boost power cable?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This cable is compatible with any device that operates on 9V or 12V DC and uses a standard 5.5×2.1mm barrel connector — including most home routers, modems, WiFi repeaters, small desk fans, LED strips, and other low-power DC electronics. Always verify your device's voltage requirement before use.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use this cable with a regular power bank?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! The cable is designed to plug into any standard USB-A port, including power banks, wall adapters, car chargers, and laptop USB ports. 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