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Two 15 cm cables with 7.9 by 5.5 mm round female plug to square male plug with centre pin

Ruth's sister

Ruth's sister 7.9×5.5mm to square-pin adapter cable 15cm 2-pack

SKU CH-W14Z-PNW5Z

Converts a 7.9×5.5 mm Lenovo barrel plug to a square-pin tip using 15 cm all-copper 0.64 mm² cables, sold as a pair

  • Converts Lenovo 7.9×5.5 mm barrel to square-pin port
  • 15 cm cable keeps internal routing tidy
  • All-copper 0.64 mm² cores deliver reliable power
  • Two adapters included for spare or multi-device use
  • IC-equipped square plug ensures secure mating

Lenovo power adapter cable 2-pack

This pair of 15 cm cables converts a Lenovo round 7.9×5.5 mm DC jack to the newer square-pin connector used on recent ultrabooks. Each cable carries a 0.64 mm² all-copper core and weighs 25 g. The set suits owners who need to keep an existing power brick while moving to a square-port notebook.

Build quality and daily use

The connectors feature a female IBM 7.9×5.5 mm round socket on one end and a male Lenovo square-pin plug with an integrated IC chip on the other. Good workmanship on the two-core wiring keeps the short run tidy inside a bag or docking station. Voltage and current must match the original supply, so users should verify compatibility before connecting.

Replacing a mismatched tip

These adapters replace the need for a whole new charger when the notebook port changes from round to square-pin. The jump is worth it when the existing brick still delivers the correct voltage and current for the new machine. Buyers who need a different barrel size or a straight-through extension will not be served by this specific tip converter.

How it compares

Measured against everything we stock in Internal PSU & Riser Cables, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 80% of the 7,839 comparable items (median $14.99).

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Specifications

No published specifications for this item yet.

Questions about this item

What is the 7.9×5.5 mm connector and what does it limit?

The 7.9×5.5 mm female barrel is the legacy Lenovo power input; the adapter passes whatever voltage and current the original supply delivers without changing it.

What clearance does the 15 cm cable need inside the chassis?

The cable is about 15 cm long and weighs 25 g, so it only requires enough room for the two barrel ends and the short flex between them.

How do you install the adapter and what step is often missed?

Plug the 7.9×5.5 mm female end onto the existing power tip, then insert the square-pin male end into the ultrabook; the step often missed is confirming the supply voltage and current match the laptop's original rating.

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