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A black 5.5 by 2.5 mm 2.1 female DC plug internal power cable

Ruth's sister

Ruth's sister 5.5*2.5mm 2.1 Female DC Plug internal power cable

SKU CH-212S-4VVYJ

Internal 5.5 mm by 2.5 mm DC power cable with a 2.1 mm centre pin for Microsoft Surface Pro 3 and Pro 4 tablets

  • 5 mm by 2.5 mm barrel fits Surface Pro 3 and 4 power ports
  • 1 mm centre pin matches original charger specification
  • Female DC plug enables direct internal power connection
  • New cable ready for immediate installation

5.5 × 2.5 mm DC power cable

This internal cable provides a 5.5 mm outer diameter and 2.5 mm inner diameter barrel connector with a 2.1 mm centre pin. It is designed to deliver power to Microsoft Surface Pro 3 and Pro 4 tablets from a compatible source. The female DC plug mates with a matching male jack on the power supply. Builders adapting a generic PSU for these tablets will find the connector dimensions match the original charger.

Connector size limits compatibility

The 5.5 × 2.5 mm barrel with a 2.1 mm centre pin fits only devices that specify this exact geometry. Tablets or peripherals requiring a different inner diameter, pin size or polarity cannot use this cable. It carries DC power only and does not transmit data or negotiate voltage. Users needing a USB-C or proprietary Surface Connect interface must choose a different adapter.

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 difference between the 5.5 mm and 2.5 mm dimensions?

The 5.5 mm figure is the outer diameter of the barrel plug, while 2.5 mm is the inner pin diameter; together they define the 5.5×2.5 mm connector size.

Will the 2.1 mm centre pin fit my Surface Pro 3 or Pro 4 charging port?

The plug is specified as a 2.1 mm centre-pin type, which matches the DC input on Surface Pro 3 and Pro 4 tablets for direct charging.

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