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Short braided cable with a barrel connector on one end and a USB-C plug on the other

Fervit

Fervit DC Jack 4.5×3.0 mm to USB-C 140W 18 cm cable

SKU CH-HD67-1MKX2

Converts a 4.5×3.0 mm DC barrel jack into a USB-C port delivering up to 140 W for laptops, tablets and phones

  • Delivers up to 140 W charging from a 20 V 7 A DC source
  • Accepts 15 V to 20.5 V input for flexible power adapter use
  • Braided tangle-free jacket resists wear during daily transport
  • 18 cm length keeps laptop setups tidy and portable
  • Supports PD, QC 2.0, QC 3.0 and multiple fast-charge protocols

What this cable does

The Fervit adapter cable converts a 4.5×3.0 mm DC barrel input into a USB-C output that can deliver up to 140 W at 20 V/7 A. It accepts an input range of 15 V to 20.5 V and negotiates 5 V/1.5 A, 9 V/2 A or 20 V/5 A depending on the attached device. The 18 cm braided assembly is plug-and-play with no driver required.

Who this suits and who it does not

Builders who need to power a USB-C laptop or tablet from an existing 140 W, 100 W or 65 W barrel supply will find the connector match and power-handling useful. Buyers whose charger tops out below 15 V or whose device draws more than 7 A at 20 V cannot use this cable safely. Users needing a longer reach or a right-angle barrel plug should look elsewhere.

What the construction and protocol support change

The woven braid sleeve resists tangling and protects the conductors during frequent transport. Supported fast-charge protocols include PD, QC 2.0, QC 3.0, DCP, PE+ 1.1, PE 2.0, FCP, AFC, SFCP and SCP, so the cable negotiates the correct voltage for MacBook Pro 2018, 2019, 2020, Dell XPS, Chromebook and other 20 V/9 V/5 V USB-C hardware.

How it compares

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

Price $19.99
Pricier than about 77% of the 15,227 comparable items (median $14.99).

Specifications

Product
Brand nameFervit

Questions about this item

What power source is required for the DC 4.5×3.0 mm input to deliver up to 140W?

A DC power supply providing 15V to 20.5V that can output at least 140W is needed for the cable to negotiate 20V/7A.

Will this cable charge a MacBook Pro from 2018, 2019 or 2020 at its full 65W or 100W rate?

Yes, it supports 20V/5A and 20V/7A profiles used by those models, so 65W and 100W charging work when the source supplies 140W.

How can I confirm the cable is negotiating the correct 20V/7A profile after connecting?

Check the laptop or phone charging indicator — it should show 140W or 20V/7A; if it shows only 5V/1.5A or 9V/2A, the source or device is limiting the rate.

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