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Coiled braided cable with barrel connector on one end and USB-C on the other

Fervit

Fervit DC Jack 7.9x5.4mm to USB-C 140W Cable 18cm

SKU CH-GQFD-JN3T5

An 18 cm adapter cable converts a 7.9 x 5.4 mm DC jack input into a USB-C port delivering up to 140 W at 20 V/7 A

  • Tangle-free braided sleeve for rugged durability
  • Up to 140W charging at 20V 7A with 140W input
  • Works with USB-C laptops including Mac Pro 2020 2019 2018 XPS Chromebook
  • Supports PD QC 2.0 QC 3.0 DCP PE+ 1.1 PE 2.0 FCP AFC SFCP SCP
  • 18cm cable converts 7.9x5.4mm DC jack to USB-C power input

Power delivery for barrel-jack sources

This Fervit cable converts a 7.9 by 5.4 mm DC input into a USB-C connector rated for up to 140 W. It accepts 15 to 20 V and delivers 5 V at 2 A, 9 V at 2 A or 20 V at 7 A. The 18 cm braided assembly is plug-and-play and supports PD, QC 2.0, QC 3.0, DCP, PE+ 1.1, PE 2.0, FCP, AFC, SFCP and SCP protocols.

Suited for laptops with matching barrels

Users who need to power a USB-C laptop, tablet or phone from an existing barrel-jack supply will find this adapter convenient. It is not for devices that require a different barrel size, a higher voltage than 20 V or a lower input floor than 15 V. Buyers who want a longer reach or a detachable cable should look at something else.

Build integration notes

The short length keeps cable clutter minimal on a desk or in a bag. No external power brick is needed beyond the source that already fits the 7.9 by 5.4 mm jack. Verify that your device’s rated voltage and current match the 5 V, 9 V or 20 V profiles before connecting.

How it compares

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

Price $20.99
Pricier than about 80% of the 15,227 comparable items (median $14.99).

Specifications

Product
Brand nameFervit

Questions about this item

What DC power source do I need to connect to the 7.9x5.4mm jack for this cable to work?

You need a DC power supply that delivers 15V to 20V and can provide up to 140W so the cable can output 20V at 7A.

Will this cable charge my older USB-C laptop that only accepts 5V or 9V input?

Yes, the cable negotiates 5V at 2A or 9V at 2A through its supported PD and quick-charge protocols for devices that do not accept 20V.

How can I confirm the cable is delivering the full 140W to my laptop after I plug it in?

Check your laptop's battery or power settings; it should report a charge rate of 20V at 7A when the system is under load and the source supports 140W.

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