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Small black cylindrical power adapter with 5.5 by 1.7mm male plug on one end and 5.5 by 2.5mm female jack on the other

eForChina

eForChina 240W 5.5 x 1.7mm Male to 5.5 x 2.5mm Female Adapter

SKU CH-S9KA-K9J7S

Converts a 5.5 x 1.7 mm male plug to a 5.5 x 2.5 mm female jack for 240 W DC power

  • Adapter typePower Adapter
  • Supports up to 240 W power delivery
  • Connects 5.5 × 1.7 mm male plug to 5.5 × 2.5 mm female jack
  • Converts barrel connector sizes without tools
  • Compact design fits in tight spaces
  • Plug-and-play operation requires no configuration

240W DC Power Adapter

This adapter converts a 5.5 x 1.7mm male plug into a 5.5 x 2.5mm female socket. It handles up to 240W of power for compatible DC devices. The compact form factor makes it simple to transport in a laptop bag or toolkit. It is intended for users needing to match disparate barrel connector sizes.

Plug-and-play connector conversion

The male end inserts into a 5.5 x 1.7mm power source while the female end accepts a 5.5 x 2.5mm device plug. No drivers or configuration are required for operation. It bridges the connection between mismatched power bricks and hardware. The small housing adds minimal bulk to the cable run.

Sustained 240W power delivery

The adapter is rated for continuous loads up to 240W without active cooling. Passive heat dissipation relies on the metal contact surfaces and airflow around the cable. It maintains a stable connection during extended charging or operation sessions. Builders should verify their source and load stay within this limit.

How it compares

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

Price $4.99
Cheaper than about 93% of the 1,761 comparable items (median $18.99).

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Specifications

Product
Adapter typePower Adapter

Questions about this item

What power limit does the 240 W rating impose on the adapter?

The adapter supports up to 240 W, so sustained loads above that level will exceed its rated capacity.

Does the adapter generate heat or noise when passing 240 W continuously?

As a passive connector with no active components, it produces no noise and negligible heat under normal operation.

Which devices must already have 5.5 mm barrels for this adapter to work?

The source needs a 5.5 x 1.7 mm male plug and the device needs a 5.5 x 2.5 mm female jack.

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