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Short braided cable with a 7.4 mm DC barrel plug on one end and a USB-C connector on the other, 18 cm long

Fervit

Fervit DC Jack 7.4x5.0mm to USB-C 140W Cable 18cm

SKU CH-9JRR-390SJ

Connects a 7.4 × 5.0 mm DC barrel jack to USB-C for up to 140 W charging in an 18 cm braided cable

  • Tangle-free braided jacket protects the cable during daily use
  • Delivers up to 140W at 20V 7A for fast laptop charging
  • Works with USB-C laptops including Mac Pro 2018 2019 2020 and XPS
  • Supports PD QC 2.0 QC 3.0 and multiple fast-charge protocols
  • Compact 18 cm length with DC 7.4 x 5.0 mm input for easy travel

DC Jack 7.4x5.0mm to USB-C Cable 18cm

This Fervit adapter cable converts a 7.4x5.0mm DC barrel input into a USB-C power output for laptops, tablets and phones. It supports up to 140W charging at 20V/7A when paired with a compatible source. The 18cm braided cable is plug-and-play and designed for portable use.

Check DC barrel size and voltage before ordering

Verify that your power supply uses a 7.4x5.0mm DC jack and delivers between 15V and 20V. Confirm your USB-C device accepts 5V/2A, 9V/2A or 20V/7A profiles to avoid damage. The cable does not convert voltage; it passes the source voltage through to the device.

Suits users with matching barrel chargers needing

Ideal for owners of 140W or 65W barrel adapters who want to charge USB-C laptops such as Mac Pro 2018, 2019, 2020 or XPS models. Not for users whose power supply uses a different barrel diameter, operates outside 15V-20V, or requires a longer cable run.

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 comes in the box with the 18 cm Fervit cable and do I need a separate power source?

The box contains only the 18 cm cable with a 7.4×5.0 mm DC jack on one end and a USB-C plug on the other; a DC power supply delivering 15–20 V is required and not included.

Which voltage and current combination should I match to my laptop for the 140 W rating?

Use a source that can provide 20 V at 7 A; the cable also passes 5 V/2 A and 9 V/2 A for lower-power devices.

What does the 140 W figure mean when the cable is connected to a MacBook Pro 2020 or Dell XPS?

It is the maximum power the cable can carry — 20 V at 7 A — provided both the DC adapter and the laptop support that voltage and current.

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