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Ten short cables with round barrel plugs and square-pin sockets

Ruth's sister

Ruth's sister 10pcs 5.5mm 2.1mm Square Pin DC Power Adapter internal power cable

SKU CH-NGX3-PFWXM

Ten 5.5 mm by 2.1 mm female-to-square-pin DC power adapter cables for Lenovo ThinkPad X1 Carbon

  • Pack of ten cables keeps spares ready
  • 5 mm by 2.1 mm female jack fits standard barrel plugs
  • Square-pin connector matches Lenovo ThinkPad X1 Carbon power input
  • Internal power cable design routes neatly inside chassis

10-piece 5.5 mm to square-pin adapter set

This pack contains ten adapters that convert a 5.5 mm by 2.1 mm female barrel jack to a square-pin connector. They are intended for owners of a Lenovo ThinkPad X1 Carbon who need to connect a standard round-tip power source to the laptop's proprietary square input. Each cable is a passive straight-through converter with no active electronics.

Simple plug-in installation

No tools or soldering are required; the barrel end pushes onto the existing power supply tip and the square end seats into the laptop port. The only common issue is a loose fit if the barrel jack on the power supply is worn or out of specification, which can cause intermittent charging. Buyers who need a different tip size or a right-angle shape cannot use these adapters.

Highlights

  • Pack of ten cables keeps spares ready
  • 5 mm by 2.1 mm female jack fits standard barrel plugs
  • Square-pin connector matches Lenovo ThinkPad X1 Carbon power input
  • Internal power cable design routes neatly inside chassis

Specifications

No published specifications for this item yet.

Questions about this item

How can I confirm the 5.5 mm by 2.1 mm female jack is delivering power to the square-pin connector after connecting it?

Plug the adapter into a known-good 5.5 mm by 2.1 mm DC source, then measure voltage at the square-pin terminals with a multimeter; a reading matching the source rating shows the cable is working.

The listing mentions 10 pieces — does that mean 10 complete adapter cables or 10 individual connectors?

The pack contains 10 complete conversion cables, each with a 5.5 mm by 2.1 mm female jack on one end and a square-pin connector on the other; no extra parts are required.

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