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Black USB-A to 5.5x2.1mm barrel cable with small LED display module, 100cm long

Ruth's sister

Ruth's sister USB 5V to 12V 5.5x2.1mm Step-Up Cable with LED Display

SKU CH-9S4V-5S63F

Boosts USB 5 V to 12 V at up to .5 A with an LED voltage display and a 100 cm cable

  • Boosts 5 V USB power to 12 V for routers
  • LED display shows real-time output voltage
  • 100 cm cable gives flexible placement options
  • 5 × 2.1 mm plug fits common 12 V devices
  • Delivers up to 6 W from a 2 A USB port

Power-bank-to-router cable

This USB 5 V to 12 V step-up cable lets you run a 12 V router or similar device from a standard power bank. The built-in LED display shows the output voltage so you can confirm the line is live. It accepts a 5 V 2 A USB source and delivers up to 6 W at 12 V 0.5 A through a 5.5 × 2.1 mm centre-positive plug. The 100 cm black lead gives flexible placement behind networking gear.

Replaces dedicated 12 V adapters

Instead of a wall-wart supply, you can power compatible routers, switches, LED strips or car air purifiers from any 5 V 2 A USB port. The jump is worth it when mains power is unavailable or you want a single portable source for multiple low-power 12 V devices. Do not use it for equipment that draws more than 6 W or requires a higher current than 0.5 A at 12 V. The cable is not suitable for laptops, monitors or PoE injectors.

Sustained-load behaviour

Under continuous load the converter maintains 12 V output as long as the USB source can supply 2 A steadily. The LED display lets you monitor voltage drop in real time without a separate meter. Cable resistance over the 100 cm length is low enough for the rated 0.5 A without noticeable heating. Intermittent or weak USB ports may cause the output to sag or shut down.

How it compares

Measured against everything we stock in Internal PSU & Riser Cables, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 80% of the 7,839 comparable items (median $14.99).

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Specifications

No published specifications for this item yet.

Questions about this item

What size DC barrel plug does the cable use for 12 V output?

The output end terminates in a 5.5 × 2.1 mm plug with centre-positive polarity, matching many routers and LED strips.

How do I connect the cable to a power bank and what mistake should I avoid?

Plug the standard USB 2.0 male end into any 5 V USB port capable of 2 A, then attach the 5.5 × 2.1 mm plug to the device; do not exceed the 6 W / 0.5 A output limit.

When will the built-in LED voltage display need attention?

The display draws negligible power and has no replaceable parts; it simply shows the 12 V output while the cable is operating.

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