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Small black right-angled adapter with barrel plug on one side and USB-C port on the other

Fervit

Fervit DC Jack 4.5x3.0mm to USB-C Angled 90° 140W Adapter

SKU CH-ZKYG-W78QS

Converts a 4.5×3.0 mm DC barrel jack into a USB-C PD port delivering up to 140 W with a 90-degree angled plug for tight spaces

  • Converts barrel power to USB-C PD up to 140W
  • 90° angled plug fits tight spaces around ports
  • Built-in PD trigger negotiates 20V 7A from 18–20V DC input
  • Supports 5V 2A through 20V 7A output profiles for laptops, tablets, phones
  • Works with 135W or 140W chargers for 140W, 100W or 65W devices

What it is and who it fits

This Fervit adapter converts a 4.5x3.0 mm DC barrel jack into an angled USB-C plug that supports PD and QC 2.0 or 3.0. An internal 140W DC 20V 7A trigger chip negotiates the correct voltage with a 135W or 140W charger so you can power laptops, tablets or phones rated up to 140W. It suits owners of barrel-powered laptops who want to carry a single USB-C charger.

Installation ease and common pitfalls

The 90° angle lets the plug seat in tight spaces around the port without bending the cable. You must confirm that your source supplies 18V to 20V and that the device you are powering matches one of the fixed output profiles such as 20V 7A or 20V 5A. Mismatched voltage or current will damage the connected hardware.

Capacity headroom and limits

The adapter passes through 140W maximum and steps through 5V 2A, 9V 3A, 15V 2A, 20V 3.25A, 20V 5A and 20V 7A. It comfortably runs 65W, 100W and 140W devices when paired with a matching charger. It cannot deliver power beyond the negotiated profile or operate from sources below 18V.

Highlights

  • Converts barrel power to USB-C PD up to 140W
  • 90° angled plug fits tight spaces around ports
  • Built-in PD trigger negotiates 20V 7A from 18–20V DC input
  • Supports 5V 2A through 20V 7A output profiles for laptops, tablets, phones
  • Works with 135W or 140W chargers for 140W, 100W or 65W devices

Specifications

BrandFervit

Questions about this item

How can I confirm the adapter is delivering the correct 20V 7A output after connecting it?

The adapter triggers a built-in 140W PD emulator at 20V 7A; your device should show it is charging at the full 140W rate when connected to a compatible 135W or 140W DC source.

What comes in the package and what extra items are required?

The package contains the angled 90° DC jack 4.5x3.0mm to USB-C adapter only; you must supply a 135W or 140W DC charger with an 18V-20V output and a USB-C cable for your device.

Which output profile should I select for a 100W laptop versus a 65W laptop?

The adapter negotiates automatically: it can provide 20V 5A for 100W laptops and 20V 3.25A for 65W laptops, so no manual selection is needed.

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