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Black compact adapter with DC 4.0 x 1.7mm female input and USB-C male output

BUCIER

BUCIER 4017 100W PD DC 4.0 x 1.7mm to USB-C Adapter

SKU CH-ZK3S-XWH5C

Converts a DC 4.0 x 1.7 mm barrel jack to a USB-C PD plug with a built-in identification chip, supporting 5 V, 9 V and 20 V output up to 100 W when the source charger exceeds the laptop's power draw

  • ColorBlack
  • TypeUSB Type C
  • CompatibilityLaptop
  • AC Adapter Voltage20 volts
  • Converts legacy 4.0×1.7 mm barrel power to USB-C PD
  • Built-in PD chip negotiates 5 V, 9 V or 20 V automatically
  • Supports up to 100 W output when source exceeds load
  • Input accepts 15 V–20.5 V from existing DC adapters
  • Compact adapter replaces bulky bricks for travel convenience

Compact DC-to-USB-C power adapter

The BUCIER 4017 converts a DC 4.0 x 1.7 mm barrel jack into a USB-C male plug with an integrated PD identification chip. It accepts 15 V to 20.5 V input and delivers 5 V, 9 V or 20 V output up to 100 W. The unit suits users who want to power a USB-C laptop or device from an existing barrel-type supply.

Replacing a proprietary barrel charger

The adapter lets you keep a higher-wattage DC brick while moving to a USB-C device, provided the source exceeds the load — for example a 90 W charger running an 86 W or 65 W laptop. It will not work if input and output power are equal or if the device draws more than 100 W, and 12 V or 15 V PD profiles are not supported.

Simple plug-in with one critical rule

Installation is a direct connection: plug the barrel jack into the adapter and the USB-C end into the device. The most common failure is ignoring the rule that charger power must be greater than laptop power; equal ratings or an undersized brick will prevent operation. No drivers or configuration are required.

Highlights

  • Converts legacy 4.0×1.7 mm barrel power to USB-C PD
  • Built-in PD chip negotiates 5 V, 9 V or 20 V automatically
  • Supports up to 100 W output when source exceeds load
  • Input accepts 15 V–20.5 V from existing DC adapters
  • Compact adapter replaces bulky bricks for travel convenience

Specifications

BrandSinLoon
Model4017
ColorBlack
TypeUSB Type C
CompatibilityLaptop
AC Adapter Voltage20 volts

Questions about this item

Will the DC 4.0 x 1.7 mm female jack on this adapter fit my existing barrel charger?

The adapter accepts a DC 4.0 mm x 1.7 mm barrel plug, so any charger with that exact barrel size will connect directly.

What is the installation step people most often miss when using this adapter?

Your DC charger must supply more power than the laptop draws; for example, a 90 W charger will not run a 90 W laptop — the charger must exceed the laptop’s requirement.

Does the built-in PD chip require any firmware updates or replacement over time?

The PD automatic identification chip is fixed in hardware and needs no firmware updates or scheduled replacement.

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