USB 5V to 12V Step-Up Boost Cable 2.1x5.5mm DC Adapter

$9.66 $10.91

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USB 5V to 12V Step-Up Power Boost Cable – Power Your Router or Switch from Any USB Port

Tired of hunting for a dedicated 12V power adapter? This compact USB power boost cable converts standard 5V USB output to a stable 12V DC supply — perfect for powering routers, switches, ADSL modems, and optical fiber equipment directly from a USB power source. No extra adapters, no clutter — just plug in and go.

Made in Mainland China.

Key Features

5V to 12V Step-Up Boost: Built-in boost module converts USB 5V input to a reliable 12V output at 0.8–1A, enough to run most compact network devices.
Universal 2.1×5.5mm DC Barrel Connector: Fits the standard DC jack found on the majority of routers, switches, and ADSL/fiber modems.
Wide Compatibility: Works with any brand of router, switch, or optical modem — as long as the device operates at 12V and draws no more than 10W.
Quality Conductor: 12-strand 0.1mm national-standard copper wire ensures low resistance and stable current delivery.
Durable PVC Jacket: Flexible, tangle-resistant 1-metre cable built for everyday use.
No Assembly Required: Ready to use straight out of the package.

Specifications

Input Voltage	DC 5V (via USB)
Output Voltage	DC 12V
Output Current	0.8–1A (max 10W device load)
DC Plug Size	5.5mm (OD) × 2.1mm (ID)
Conductor	12 × 0.1mm national-standard copper
Jacket Material	PVC
Cable Length	1 metre
Color	Black

Buying Guide – How to Choose the Right Cable

Check Your Device's Label: Look at the bottom or back of your router, switch, or modem for the required voltage and current. Choose a cable matching that voltage (5V, 9V, or 12V).
Verify the DC Plug Size: If your device has a 5.5mm outer-diameter jack, this cable fits directly. If it uses a 3.5mm jack (same size as a headphone plug), select a version with the matching 3.5mm connector head.
Check Power Consumption: This cable supports devices up to 10W. Ensure your device does not exceed this to maintain stable operation.

What's in the Box

1 × USB Power Boost Cable (5V to 12V, 2.1×5.5mm DC Male)

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Frequently Asked Questions

Q: Can this USB to 12V boost cable power any router or switch brand?

A: Yes — this cable is brand-agnostic. It works with any router, switch, ADSL modem, or optical modem that requires 12V DC input through a standard 5.5×2.1mm barrel jack, provided the device consumes no more than 10W total.

Q: What USB power source do I need to use this 5V to 12V step-up cable?

A: Any standard USB port or USB power bank that outputs 5V can be used. For best results, use a USB adapter or power bank capable of supplying at least 2A at 5V to ensure the boost module has enough headroom to deliver a stable 12V/1A output.

Q: What is the maximum power (wattage) this cable can support?

A: The cable supports a maximum load of 10W. Devices requiring more than 10W should not be used with this cable, as the output current is rated at 0.8–1A at 12V.

Q: Does this cable fit a 3.5mm DC jack?

A: No — this specific cable comes with a 5.5×2.1mm DC barrel connector. If your device uses the smaller 3.5mm jack (similar in size to a headphone plug), you will need to select the variant listed with a 3.5mm connector head.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.

We prioritize quality in selecting the materials for our items, choosing premium fabrics and finishings that ensure durability, comfort, and timeless appeal.

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.