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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

  • Adapter typeUSB Type C
  • Thunderbolt 3 supportUSB
  • First connectorUSB Type C
  • Second connectorUSB Type C
  • Units per package1
  • Product typeUSB 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.

How it compares

Measured against everything we stock in USB Adapter Cables & Dongles, at today’s prices. Recalculated every night.

Price $13.99
Cheaper than about 60% of the 1,430 comparable items (median $14.99).

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Specifications

Product
Brand nameSinLoon
Part number20230402
Product typeUSB Type C
Product colorBlack 7406 B
Adapter typeUSB Type C
Ports & slots
Thunderbolt 3 supportUSB
First connectorUSB Type C
Second connectorUSB Type C
Size & build
Product weight0.009 kg
In the box
Units per package1

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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