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Small black right-angle adapter with 7.9x5.4mm DC plug and USB-C socket

Vszerda

Vszerda UC-066-7954MM-HX DC 7.9x5.4mm to USB-C 140W angled adapter

SKU CH-1WV9-3ZP1G

Converts a 7.9x5.4mm DC barrel jack into a 140W USB-C PD port with a 90-degree angled plug for tight spaces

  • Power adapter voltage20 V DC
  • Power adapter wattage140 W
  • Product colorBlack
  • Product typeDC USB-C
  • Compatible withLaptop
  • Product weight0.01 kg
  • Angled 90-degree plug fits tight spaces around DC ports
  • Converts 7.9x5.4mm DC input to USB-C for modern devices
  • Delivers up to 140W output with multiple voltage profiles
  • Built-in PD emulator trigger enables 140W charging from compatible sources
  • Weighs just 0.01 kg for ultra-portable power conversion

What this adapter does

The Vszerda UC-066-7954MM-HX converts a DC 7.9x5.4 mm barrel input into a USB-C output with a 90-degree angled plug. It is built for users who need to power a USB-C laptop, tablet or phone from an existing 135 W or 140 W barrel-type charger where space around the port is tight.

Power delivery limits

The adapter accepts 18 V to 20 V input up to 140 W and delivers a maximum of 140 W through USB-C. Supported output profiles are 5 V 2 A, 9 V 3 A, 15 V 2 A, 20 V 3.25 A, 20 V 5 A and 20 V 7 A. It works with PD, QC2.0 and QC3.0 protocols, but the source charger must supply the required voltage and current for the desired profile.

Deciding specification

The critical figure is the 7.9 mm by 5.4 mm DC jack size; the adapter will only fit chargers with that exact barrel diameter. Buyers whose charger uses a different barrel dimension cannot use this unit, and mismatched voltage or current ratings risk damage to the connected device.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $11.99
Cheaper than about 90% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameVszerda
Model nameUC-066-7954MM-HX
Part numberUC-066-7954MM-HX
Product colorBlack
Product typeDC USB-C
Power
Power adapter voltage20 V DC
Power adapter wattage140 W
Size & build
Product weight0.01 kg
Compatibility
Compatible withLaptop

Questions about this item

Which DC barrel size does the UC-066-7954MM-HX accept?

It takes a 7.9 mm outer by 5.4 mm inner DC jack, so match your charger tip to those dimensions.

What does the 140 W rating mean when I plug in a laptop?

The adapter can pass up to 140 W at 20 V and 7 A, provided your charger supplies 18–20 V and your device negotiates that profile.

Which USB-C power standards does the built-in trigger support?

It implements USB PD plus QC 2.0 and QC 3.0, offering fixed steps of 5 V/2 A, 9 V/3 A, 15 V/2 A, 20 V/3.25 A, 20 V/5 A and 20 V/7 A.

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