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Black DC adapter with 7.4x5.0mm male plug and 5.5x2.1mm female jack

Defendwe

Defendwe 7.4x5.0mm to 5.5x2.1mm DC Power Adapter

SKU CH-EH5J-4YAWT

Converts a 7.4x5.0mm DC plug to a 5.5x2.1mm jack for laptop power compatibility

  • Connection typeMicro USB to USB A
  • Converts 7.4x5.0mm plug to 5.5x2.1mm jack for laptop power compatibility
  • 5mm outer diameter with 2.1mm centre pin matches common barrel connector sizes
  • 4mm outer diameter with 5.0mm centre pin fits specific notebook power ports
  • Male-to-female design extends existing cable without soldering or tools
  • New condition ensures reliable contact and clean connector surfaces

Purpose and Fit

This Defendwe adapter converts a 7.4x5.0mm male plug to a 5.5x2.1mm female jack for notebook and laptop power connections. It suits users who need to match a specific barrel size on an existing charger or device.

Who It Suits

The adapter works for owners of equipment fitted with a 7.4x5.0mm input that must accept a 5.5x2.1mm plug. It does not help buyers who need a different barrel diameter, a USB-C power path or a longer cable assembly.

Sustained Use

The converter is a passive component with no active electronics, so its behaviour under continuous load is limited to the physical connection and the current rating of the attached power supply. Heat rise depends entirely on the source adapter and the device being powered.

How it compares

Measured against everything we stock in USB Cords & Extension Cables, at today’s prices. Recalculated every night.

Price $17.99
Pricier than about 70% of the 15,227 comparable items (median $14.99).

Specifications

Ports & slots
Connection typeMicro USB to USB A

Questions about this item

Does my laptop need a 7.4x5.0mm charging port for this adapter to fit?

Yes, the male plug measures 7.4 mm outer diameter by 5.0 mm inner diameter and is designed to insert directly into that port.

Will the 5.5x2.1mm female jack accept the barrel connector from my older power supply?

The jack accepts a standard 5.5 mm outer by 2.1 mm inner barrel plug, which matches many legacy laptop chargers.

How can I confirm the adapter is passing power correctly after I connect it?

The laptop charging indicator should light and the battery icon show charging once the adapter bridges the two connectors.

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