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Small black adapter with 7.9 by 5.4 mm barrel plug and right-angle USB-C connector

Fervit

Fervit DC Jack 7.9x5.4mm to USB-C 90° 140W Adapter

SKU CH-8JD3-14P9X

Converts a 7.9×5.4 mm barrel jack to USB-C with 90° angled plug, delivering up to 140 W via PD and QC 2.0/3.0

  • Delivers up to 140W power via built-in PD trigger
  • Accepts 18-20V DC input from 135W or 140W chargers
  • 90-degree angled plug fits tight port clearances
  • Supports multiple output profiles including 20V at 7A
  • Compatible with 65W, 100W and 140W laptops, tablets and phones

DC Jack to USB-C Adapter

This adapter converts a 7.9x5.4mm DC barrel input into a USB-C output with a 90-degree angled plug. It is designed for users who need to power USB-C laptops, tablets or phones from an existing 135W or 140W DC charger. The built-in PD emulator trigger negotiates the required voltage automatically. It suits anyone replacing a lost proprietary tip or consolidating chargers.

Power Delivery Limits

The adapter accepts DC input between 18V and 20V at up to 140W and outputs a maximum of 140W. Supported fixed output profiles are 5V/2A, 9V/3A, 15V/2A, 20V/3.25A, 20V/5A and 20V/7A. It implements USB PD alongside QC 2.0 and QC 3.0 handshakes. No power conversion occurs above the stated 140W ceiling, so higher-wattage sources will not yield more output.

Capacity and Headroom

The unit comfortably handles 140W, 100W and 65W USB-C devices such as MacBooks, laptops, tablets and phones when paired with a matching 135W or 140W DC source. It runs out of headroom if the attached device requests more than 140W or a voltage outside the 18–20V input window. Users must verify their device’s rated voltage and current before connecting to avoid damage.

Highlights

  • Delivers up to 140W power via built-in PD trigger
  • Accepts 18-20V DC input from 135W or 140W chargers
  • 90-degree angled plug fits tight port clearances
  • Supports multiple output profiles including 20V at 7A
  • Compatible with 65W, 100W and 140W laptops, tablets and phones

Specifications

BrandFervit

Questions about this item

Should I pick the 7.9x5.4mm DC jack version or another size for my laptop?

This adapter only exists with a 7.9x5.4mm DC input; match that exact barrel size on your existing 18-20V charger before buying.

What does the 140W rating actually deliver to my MacBook or laptop?

It passes up to 140W through USB-C at 20V 7A, 20V 5A, 20V 3.25A, 15V 2A, 9V 3A or 5V 2A, so a 140W or 100W machine charges at full speed while a 65W device draws only what it needs.

Which USB-C Power Delivery standards does the built-in trigger chip support?

The internal PD emulator handles USB PD and QC 2.0/3.0, negotiating 5V, 9V, 15V or 20V output steps up to the 140W ceiling.

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