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Black 1 metre cable with 4.0x1.7mm barrel plug and USB-A plug

Unique-Bargains

Unique-Bargains 1m DC 4.0x1.7mm male barrel to USB male power extension cord

SKU CH-2SSZ-EE0JF

Extends a 4.0 × 1.7 mm barrel power source to a USB-A plug for charging USB devices, with a 1 m cable length

  • Product typePower
  • Converts barrel power to USB charging using spare adapters
  • 1 metre cable length gives flexible placement options
  • 0 × 1.7 mm barrel jack fits compatible power supplies
  • Male-to-male design simplifies camera and device installation
  • 5 mm wire diameter supports reliable power delivery

Barrel-to-USB power cable

This 1 m cable converts a 4.0×1.7 mm male barrel jack into a standard USB‑A male plug so you can run USB devices from an existing barrel‑type power adapter. It is intended for hobbyists, installers or anyone repurposing spare barrel chargers for USB charging or low‑power equipment.

Check connector polarity and voltage

Verify that your barrel power supply uses a 4.0 mm outer diameter with a 1.7 mm centre pin and that its output voltage matches the USB device’s 5 V requirement. The cable simply passes the supply voltage through; it does not regulate or convert it. Also confirm the 3.5 mm wire diameter fits your routing space.

Replaces improvised barrel‑to‑USB wiring

This ready‑made cord removes the need to splice or solder a custom adapter when you want to power USB gear from a barrel source. The upgrade is worthwhile whenever you have a compatible barrel charger on hand and want a tidy, plug‑and‑play connection without building your own cable.

How it compares

Measured against everything we stock in AC Extension Cords, at today’s prices. Recalculated every night.

Price $4.99
Cheaper than about 92% of the 864 comparable items (median $15.99).

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Specifications

Product
Brand nameUnique Bargains
Product typePower

Questions about this item

What connectors are on the cable and do I need to buy a power adapter separately?

The cable has a 4.0x1.7mm male barrel jack on one end and a USB male plug on the other. You must supply your own barrel-output power adapter to use it.

The title mentions 4.0x0.7mm while the specs list 4.0x1.7mm — which size should I match to my device?

The detailed specifications list a 4.0x1.7mm male barrel jack. Check your device's power input for that exact outer and inner diameter before ordering.

What does the 0.3 mm² cross-section mean for charging speed when I plug this into my barrel adapter?

The 0.3 mm² wire gauge supports typical USB charging currents. Actual power delivery depends entirely on the barrel adapter you connect, not on the cable alone.

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