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Short braided cable with DC barrel plug 7.9 by 5.4 mm and USB-C connector

Vszerda

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

SKU CH-V9K6-1191W

Connects a 7.9x5.4 mm DC barrel jack to USB-C, delivering up to 140 W at 20 V / 7 A for laptops and phones

  • Cable Length18 centimeters
  • Length18 centimeters
  • Connector Number1
  • Specifications18, centimeters, UC-158-7954MM-XY, xiwai, Laptop
  • FeaturesLaptop
  • Delivers up to 140W power with 20V 7A output
  • Braided tangle-free sleeve protects cable for long-term rugged use
  • Compact 18cm length enables easy carrying and flexible placement
  • Works with USB-C laptops including Mac Pro 2020 2019 2018 and XPS models
  • Accepts DC input from 15V to 20.5V for versatile charging scenarios

Purpose and audience

This Vszerda cable adapts a 7.9x5.4mm DC barrel jack to a USB-C connector for charging laptops and phones. It targets users who need to power USB-C devices from an existing 15V to 20.5V DC source. The 18cm braided length suits compact setups where a short, tangle-free link is preferred. It is not for buyers who require a longer cable or a direct wall-plug charger.

Thermals noise and power

The cable supports up to 140W throughput at 20V and 7A when paired with a compatible 140W input and device. It also handles 100W and 65W profiles at 5V, 9V and 20V. The braided sleeve protects the conductors during daily use. No active cooling or fan is present, so operation remains silent.

Deciding specification

The connector size is 7.9mm outer diameter by 5.4mm inner diameter. Verify that your power source matches this exact barrel dimension and supplies between 15V and 20.5V before connecting. Using an incorrect voltage or tip size can damage the attached laptop or phone.

Highlights

  • Delivers up to 140W power with 20V 7A output
  • Braided tangle-free sleeve protects cable for long-term rugged use
  • Compact 18cm length enables easy carrying and flexible placement
  • Works with USB-C laptops including Mac Pro 2020 2019 2018 and XPS models
  • Accepts DC input from 15V to 20.5V for versatile charging scenarios

Specifications

Brandxiwai
ModelUC-158-7954MM-XY
Cable Length18 centimeters
Length18 centimeters
Connector Number1
Specifications18, centimeters, UC-158-7954MM-XY, xiwai, Laptop
FeaturesLaptop

Questions about this item

How do I connect the 7.9x5.4mm DC jack to my laptop's power input?

Align the 7.9mm outer and 5.4mm inner diameter plug with the laptop's DC port, then push firmly until fully seated; the 18cm cable leaves no slack for strain relief.

Will the braided sleeve or connectors wear out and need replacing?

The woven braid jacket resists abrasion, but repeated bending near the moulded DC and USB-C ends can fatigue the internal wires over time.

At what point does the 140W rating hit a thermal or current limit during long charges?

Sustained 20V/7A output is capped by the cable's 100W maximum specification, so prolonged loads above that will throttle.

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