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Compact barrel-to-USB-C adapter with 7.4 x 5.0mm jack

SMUGDESK

SMUGDESK 7.4 x 5.0mm Barrel to USB-C Power Adapter

SKU CH-8JN4-76H3B

Converts a 7.4 x 5.0mm barrel power supply into a USB-C charger for phones, tablets and laptops

  • Reuse existing HP chargers with 7.4 x 5.0mm barrel input
  • Convert legacy DC power supply to USB-C output for Type-C devices
  • Charge smartphones, tablets and portable laptops via USB-C port
  • Compact pocket-sized design fits easily in backpacks and desk drawers
  • Plug-and-play adapter recycles idle DC power bricks without extra equipment

What this adapter does

The SMUGDESK 7.4 x 5.0mm barrel-to-USB-C adapter converts a legacy DC power supply into a USB-C charging source. It accepts input from the common 7.4*5.0mm barrel jack found on many HP laptop chargers and outputs power to USB-C phones, tablets and portable laptops. The pocket-sized unit is designed for travel, office or home use.

Thermals, noise and power

This passive adapter has no fan or active cooling, so it operates silently and adds no measurable heat of its own. Power delivery depends entirely on the connected DC supply; the adapter simply passes the voltage and current through to the USB-C device. Users must verify that the source brick matches the device’s requirements to avoid damage.

What it replaces and when to upgrade

It replaces a dedicated USB-C charger by recycling an idle barrel-tip power brick, saving cost and reducing e-waste. The jump is worthwhile when you already own a compatible 7.4*5.0mm supply with the correct voltage and current for your USB-C gear. It is not for users who need data transfer, fast-charge negotiation protocols or a supply they do not already possess.

Highlights

  • Reuse existing HP chargers with 7.4 x 5.0mm barrel input
  • Convert legacy DC power supply to USB-C output for Type-C devices
  • Charge smartphones, tablets and portable laptops via USB-C port
  • Compact pocket-sized design fits easily in backpacks and desk drawers
  • Plug-and-play adapter recycles idle DC power bricks without extra equipment

Specifications

No published specifications for this item yet.

Questions about this item

How do I install the 7.4 x 5.0mm barrel to USB-C adapter, and what step do people often get wrong?

Plug the 7.4 x 5.0mm barrel jack into your HP power supply, then connect a USB-C cable to the adapter output; the step people miss is verifying the brick's voltage and current match the device before powering on.

What maintenance or replacement will the 7.4 x 5.0mm to USB-C adapter need later?

No routine maintenance is required; inspect the barrel plug and USB-C port for debris or bent pins periodically, and replace the unit if the housing cracks or connections become loose.

What limit shows up first when using the 7.4 x 5.0mm barrel to USB-C adapter under sustained load?

The adapter only passes power without data, so the first limit is the source brick's maximum voltage and current rating; exceeding the connected device's input spec will trigger its protection or cause damage.

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