USB 5V to 9V 12V Boost Converter Cable | DC 5.5x2.1mm Plug

Power More Devices from Any USB Port

Tired of hunting for the right power adapter? This USB DC 5V to 9V/12V Boost Converter Cable lets you power your router, modem, WiFi extender, fan, speaker, or other 9V/12V devices directly from any standard USB port or power bank. Simply plug the USB end into your power source and connect the 5.5×2.1mm DC barrel plug to your device — no extra adapters needed.

Whether you're setting up a travel workspace, a temporary network station, or just need a flexible backup power solution, this compact boost module cable is the versatile tool every tech enthusiast should have on hand.

Key Features

• Dual Output Voltage: Converts USB 5V input to selectable 9V or 12V DC output to suit a wide range of devices
• Universal 5.5×2.1mm Barrel Plug: Fits the most common DC power jack size used in routers, modems, fans, speakers, and more
• Compact Boost Module Design: Lightweight and portable — easily fits in a laptop bag, travel kit, or toolbox
• Wide Compatibility: Works with USB ports on computers, wall chargers, car chargers, and power banks
• Plug-and-Play: No drivers, no installation — just connect and power up
• Safe & Stable Output: Built-in boost circuitry provides steady voltage regulation for reliable device performance

What Can You Power?

• Wireless routers & modems
• WiFi range extenders
• Portable fans
• Bluetooth speakers
• LED strips & small electronics
• Security cameras & sensors

Specifications

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For more information on electrical safety standards for consumer electronics, visit the U.S. Consumer Product Safety Commission (CPSC).

Learn more: USB hardware

Frequently Asked Questions

Q: What devices can I use with this USB 5V to 9V/12V boost converter cable?

A: This boost converter cable is compatible with any device that uses a standard 5.5×2.1mm DC barrel connector and requires 9V or 12V power — including wireless routers, modems, WiFi extenders, portable fans, Bluetooth speakers, LED strips, and small security cameras.

Q: Will any USB power bank work as the input source?

A: Yes! As long as your power bank or USB charger provides a standard 5V USB output, this cable will boost the voltage to 9V or 12V for your device. Output current will vary depending on your power bank's capacity, so check that your power bank can supply sufficient wattage for your specific device.

Q: Is this cable safe to use with my router or modem?

A: The cable features built-in boost circuitry designed to deliver a stable, regulated output voltage. Always verify your device's input voltage and polarity requirements before connecting. The 5.5×2.1mm center-positive plug matches the most common router and modem power jack standard.

Q: What is the difference between the 9V and 12V output options?

A: The cable comes in variants that output either 9V or 12V DC. Choose 9V for devices like many routers, modems, and small fans, and 12V for devices such as certain LED strips, larger fans, or 12V-rated electronics. Check your device's label for its required input voltage before purchasing.