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Short black cable with 4.5 by 3.0mm male plug and 7.4 by 5.0mm female jack

eForChina

eForChina 4.5 x 3.0mm to 7.4 x 5.0mm Power Adapter Cable 20cm

SKU CH-T9T0-ASDNQ

Converts a 4.5 x 3.0mm power plug to a 7.4 x 5.0mm socket in a compact 20cm cable

  • Adapter typePower Adapter
  • Converts 4.5 x 3.0mm male plugs to 7.4 x 5.0mm female ports
  • 20 cm cable length keeps laptop power connections tidy
  • Small lightweight design fits easily in any laptop bag
  • Brand new condition ensures reliable power delivery from first use
  • High quality construction maintains stable connection for notebook charging

Power adapter for laptop barrel connectors

This cable converts a 4.5 x 3.0 mm male plug into a 7.4 x 5.0 mm female socket. It lets you connect a charger or power bank with the smaller tip to a laptop that expects the larger barrel. The adapter is 20 cm long and intended for portable use.

Thermals noise and power draw

The adapter is a passive cable with no active electronics, so it generates no heat and makes no sound. It simply passes whatever current the connected supply provides up to the limits of the connectors themselves. No additional power is consumed by the adapter.

Connector compatibility decides fit

The only specification that determines whether this cable works for you is the exact barrel dimensions: 4.5 x 3.0 mm male to 7.4 x 5.0 mm female. If your charger tip or laptop port differs from those measurements, this adapter will not connect.

How it compares

Measured against everything we stock in Other Adapters & Couplers, at today’s prices. Recalculated every night.

Price $5.99
Cheaper than about 92% of the 1,761 comparable items (median $18.99).

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Specifications

Product
Adapter typePower Adapter

Questions about this item

How do I connect the 4.5 x 3.0mm male plug to my laptop's power port?

Align the centre pin and outer barrel of the 4.5 x 3.0mm male plug with the laptop's DC jack, then push straight in until fully seated; forcing it at an angle bends the centre pin.

Will the 7.4 x 5.0mm female socket wear out and need replacement?

The socket is a passive connector with no moving parts; it only needs replacement if the barrel loosens or the centre contact spreads from repeated insertions.

What limits continuous use of this 20cm adapter cable?

The thin 20cm cable and small 4.5 x 3.0mm / 7.4 x 5.0mm barrels concentrate heat, so sustained high current will raise connector temperature first.

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