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Small black adapter with a 7.4mm x 5.0mm DC female jack on one end and a USB-C male plug on the other

BUCIER

BUCIER 65W PD DC 7.4mm x 5.0mm Female to USB-C Male Adapter black 7406 B

SKU CH-RK0Z-DZ25Y

Converts a 7.4 mm × 5.0 mm DC barrel jack to USB-C PD for laptops, phones and tablets up to 65 W with automatic voltage detection

  • TypeUSB Type C
  • Colorblack 7406 B
  • Changer TypeUSB Type C
  • SpecificationsLaptop
  • Thunderbolt 3USB
  • Connector AUSB Type C
  • Converts legacy 7.4mm barrel power to USB-C
  • Built-in PD chip auto-negotiates 5V, 9V, 20V profiles
  • Supports up to 65W charging for laptops
  • Weighs only 9 grams for easy travel
  • Works with phones, tablets and laptops

What this adapter does

The BUCIER adapter converts a DC 7.4mm x 5.0mm female input into a USB Type C male output. It is designed for users who want to power USB-C laptops, tablets or phones from an existing barrel-jack charger.

How it fits your setup

The unit accepts a 65W PD charger through the 7.4mm x 5.0mm (7.4mm x 0.6mm) barrel connector and passes power to a USB-C device. An integrated PD identification chip negotiates 5V, 9V or 20V automatically. The adapter weighs .009 kilograms and replaces a bulky power brick in a bag or pocket.

Behaviour under sustained load

The adapter requires the source charger to meet or exceed the laptop’s original power rating, for example 19V 3.33A 65W. When the supply is adequate the chip maintains a stable voltage profile during continuous operation. It is not suitable for devices that draw more than the connected PD source can deliver.

Highlights

  • Converts legacy 7.4mm barrel power to USB-C
  • Built-in PD chip auto-negotiates 5V, 9V, 20V profiles
  • Supports up to 65W charging for laptops
  • Weighs only 9 grams for easy travel
  • Works with phones, tablets and laptops

Specifications

BrandSinLoon
Part Number20230402
TypeUSB Type C
Colorblack 7406 B
Changer TypeUSB Type C
SpecificationsLaptop
Thunderbolt 3USB
Connector AUSB Type C
Connector BUSB Type C
FeaturesLaptop, Cell Phone, Tablet
Weight0.009 kilograms
Package Quantity1

Questions about this item

How much power can the 7.4mm x 5.0mm DC input handle continuously?

The adapter is rated for 65W Power Delivery and requires a PD charger that can supply at least the same wattage as the laptop's original power supply, such as 19V 3.33A.

Does the built-in PD chip generate noticeable heat during all-day charging?

The compact 9g design contains an automatic identification chip that adjusts current; sustained heat depends on the attached 65W PD charger and the laptop's power draw.

Which charger must I already own for this adapter to work?

You need a 65W USB-C PD wall charger; the DC 7.4mm x 5.0mm female input connects to that charger, and the USB-C male output plugs into the laptop.

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