We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black DC adapter cable with 5.5mm to 4.5mm barrel connectors

Japanese Import

Japanese Import DC power adapter cable 5.5mm x 2.5mm to 4.5mm x 3.0mm for HP

SKU CH-M7KB-78DXG

Converts a standard 5.5 mm x 2.5 mm DC plug to a slim 4.5 mm x 3.0 mm connector for HP notebooks without changing voltage

  • Connector TypeLighting to USB C
  • Converts standard 5.5 mm x 2.5 mm DC plug to slim 4.5 mm x 3.0 mm for HP notebooks
  • Adapts connector shape only, preserving original voltage and current ratings
  • Female 5.5 mm x 2.5 mm jack accepts common barrel power supplies
  • Male 4.5 mm x 3.0 mm tip fits HP slim-port laptops
  • Ships from Japan as a single conversion adapter cable

DC power adapter for HP notebooks

This new adapter cable converts a standard 5.5 mm by 2.5 mm DC barrel plug to the slimmer 4.5 mm by 3.0 mm connector used on certain HP notebooks. It ships from Japan as a single conversion cable. The female end accepts the larger plug while the male end fits the smaller HP port, changing only the physical connector shape.

Passive connector conversion

The cable contains no active electronics and does not alter voltage, current or polarity. It simply passes power through from a compatible supply to the notebook, so thermal output, noise and power draw remain identical to the original adapter. No fan, heatsink or power circuitry is present.

Single cable in the box

The package includes only the power connector conversion adapter cable itself. No additional software, drivers, mounting hardware or alternate tips are supplied. Buyers who need a different barrel size or a complete power supply unit will not find those items here.

Highlights

  • Converts standard 5.5 mm x 2.5 mm DC plug to slim 4.5 mm x 3.0 mm for HP notebooks
  • Adapts connector shape only, preserving original voltage and current ratings
  • Female 5.5 mm x 2.5 mm jack accepts common barrel power supplies
  • Male 4.5 mm x 3.0 mm tip fits HP slim-port laptops
  • Ships from Japan as a single conversion adapter cable

Specifications

Connector TypeLighting to USB C

Questions about this item

How do I connect the 5.5 mm x 2.5 mm female end to my power brick and avoid a loose fit?

Push the female jack straight onto the charger tip until it seats fully; the inner pin must engage the 2.5 mm bore before you route the cable.

Will the 4.5 mm x 3.0 mm male plug wear out and need replacement?

The plug is a passive metal barrel; it has no moving parts, so only physical damage or corrosion would require a new cable.

At what current does the 4.5 mm x 3.0 mm tip become the limiting factor?

The adapter only changes connector geometry; the current limit is set by your charger and laptop, not by the cable itself.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.