USB 5V to 12V/9V DC Power Boost Cable for Router & WiFi

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

Tired of hunting for a wall outlet just to run your WiFi router, modem, or cooling fan? This USB DC 5V to 12V/9V Power Boost Cable is the clever solution you've been looking for. Simply plug the USB end into any standard power bank or USB charger, and the built-in boost converter module steps the voltage up to 9V or 12V — delivered cleanly through a standard 5.5×2.1mm DC barrel jack. Perfect for travel, emergencies, off-grid setups, or anywhere you need a 12V device running without a mains socket.

Made in Mainland China.

Key Features

• Universal Compatibility: Works with most routers, WiFi modems, small fans, LED strips, and other 9V/12V DC devices with a 5.5×2.1mm barrel connector.
• Built-In Boost Module: Integrated voltage step-up converter efficiently raises USB 5V input to a stable 9V or 12V output — no external adapter needed.
• Power Bank Friendly: Run your router or modem directly from a portable power bank during outages or on the go.
• Compact & Lightweight: Slim cable design is easy to pack in a bag, backpack, or travel kit.
• Plug-and-Play: No drivers, no software — just connect and power up instantly.
• Standard DC Barrel Jack: 5.5mm outer diameter / 2.1mm inner diameter connector fits a wide range of consumer electronics.

Specifications

• Input: USB 5V
• Output: DC 9V / 12V
• Connector: 5.5×2.1mm DC Barrel Jack
• Type: USB Power Boost Cable with Step-Up Converter Module
• Brand: Ashiboogoole
• Origin: Mainland China

Common Use Cases

• Powering a WiFi router or modem from a power bank during a power outage
• Running a small cooling fan in a portable or off-grid setup
• Travel setups where wall outlets aren't available
• Emergency backup power for networking equipment
• DIY electronics and maker projects requiring 9V or 12V from USB

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For guidance on safe use of consumer electronics and power accessories, refer to the U.S. Consumer Product Safety Commission – Electrical Safety Resources.

Frequently Asked Questions

Q: What devices can I power with this USB 5V to 12V power boost cable?

A: This cable is compatible with most devices that accept a 5.5×2.1mm DC barrel connector and run on 9V or 12V, including WiFi routers, cable modems, small DC fans, LED strip drivers, and various DIY electronics. Always check your device's voltage and current requirements before use.

Q: Can I use this cable with any power bank?

A: Yes — as long as your power bank has a standard USB-A output port (5V), this boost cable will work. For best results, use a power bank capable of delivering at least 2A output to ensure stable power for your router or modem.

Q: Is the output voltage fixed at 12V, or can I choose 9V?

A: This cable is available in both 9V and 12V output variants. Please ensure you select the correct output voltage that matches your device's requirements before purchasing.

Q: Is this safe to use with expensive networking equipment?

A: The built-in step-up converter module provides a regulated output voltage. However, always verify your device's input voltage, polarity (center positive is standard for most routers), and current draw to ensure compatibility and safe operation.