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Small USB-C male to 4.0 by 1.7 mm barrel female adapter

Ruth's sister

Ruth's sister 4.0*1.7mm 45W USB-C internal power cable

SKU CH-J5WW-M0JGP

Converts a 4.0 by 1.7 mm DC barrel jack to USB-C for 45 W laptop charging

  • 45W max power for Lenovo laptops via USB-C
  • 0*1.7mm barrel fits select Lenovo models
  • USB-C male input from standard chargers
  • Mini female DC jack for direct laptop connection

4.0*1.7mm 45W USB-C internal power cable

This adapter converts a 4.0mm by 1.7mm barrel input to a USB-C male plug for internal power routing. It supports devices that draw up to 45W from the source connector. The compact form factor suits custom builds or repair work where a direct USB-C feed is required. Compatibility centres on Lenovo, Xiaomi and Huawei hardware using this specific barrel size.

Practical limits of the barrel-to-USB-C interface

The 45W ceiling restricts use to lower-power laptops, tablets or peripherals rather than high-draw workstations. Barrel dimensions of 4.0mm by 1.7mm must match the host port exactly; other sizes will not connect. Power delivery negotiate only occurs if the source charger and target device both support the necessary handshake over the USB-C link. Builders needing higher wattage or a different barrel profile should select an alternative adapter.

Highlights

  • 45W max power for Lenovo laptops via USB-C
  • 0*1.7mm barrel fits select Lenovo models
  • USB-C male input from standard chargers
  • Mini female DC jack for direct laptop connection

Specifications

No published specifications for this item yet.

Questions about this item

Which 4.0*1.7 mm tip version should I choose for my Lenovo or Xiaomi laptop?

The adapter uses a 4.0*1.7 mm barrel connector that fits Lenovo, Xiaomi and Huawei devices requiring this exact tip size.

What does the 45 W rating mean when I connect it to my laptop?

It delivers up to 45 W through the USB-C male plug to the 4.0*1.7 mm barrel, matching the power requirement of compatible ultraportables.

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