USB 5V to 12V/9V DC Boost Cable – 5.5×2.1mm Power Adapter

$23.42 $28.61

Power Your Router, WIFI Modem & Fan from Any USB Power Bank

The USB DC Power Boost Cable is a compact voltage step-up converter that takes a standard 5V USB input and boosts it to either 9V or 12V DC output 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.

Key Features

Voltage Boost: Converts USB 5V input to DC 9V or 12V output
Universal 5.5×2.1mm Barrel Connector: Fits most routers, modems, fans, and DC-powered devices
Output Current: Up to 700mA — ideal for low-to-mid power devices
Compact & Lightweight: Easy to carry in a bag or travel kit
Powerbank Compatible: Keep your router or modem running anywhere with a standard USB power bank
Supply Voltage: DC 5V / 9V / 12V
Plug Size: 5.5×2.1mm DC barrel jack
No High-Concern Chemicals: Safe materials, no hazardous substances

What Can You Power With It?

This USB boost cable is compatible with a wide range of 9V or 12V DC devices, including:

Portable WiFi routers & travel routers
ADSL / broadband modems
Small DC cooling fans
LED strip controllers
Other low-power 9V/12V electronics with a 5.5×2.1mm DC jack

Great for Travel & Off-Grid Use

Whether 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.

Made in Mainland China.

Frequently Asked Questions

Q: What devices are compatible with this USB DC power boost cable?

A: 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.

Q: Can I use this cable with a standard USB power bank?

A: 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.

Q: What is the maximum current output of this boost cable?

A: 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.