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Short braided cable with USB-C female socket and 7.9 x 0.9 mm male barrel plug

eForChina

eForChina PD 100W 18.5-20V 7.9 x 0.9mm USB-C Adapter

SKU CH-P8E7-6EFH0

A 100 W USB-C power adapter cable converting 18.5-20 V input to a 7.9 x 0.9 mm barrel output

  • Adapter typePower Adapter
  • Delivers up to 100W power via USB-C PD
  • Accepts 18.5-20V input for broad laptop compatibility
  • 9 x 0.9mm barrel tip fits many legacy chargers
  • 8cm nylon-braid cable keeps desk tidy
  • Plug-and-play design needs no drivers or setup

Power Adapter Cable

This power charge adapter cable connects a USB-C power source to a device requiring a 7.9 x 0.9 mm barrel connector. It supports USB Power Delivery up to 100 W at 18.5 to 20 V. The short 8 cm nylon braided cable keeps the setup tidy. Plug and play design requires no drivers or configuration.

Users With USB-C Chargers

Ideal for owners of laptops or peripherals with the matching 7.9 x 0.9 mm input who want to use a universal USB-C PD charger. Not suitable for devices needing a different barrel size, tip polarity or voltage range. Buyers without a compliant USB-C PD source cannot use this adapter.

7.9 x 0.9 mm Output Plug

The 7.9 x 0.9 mm male barrel plug is the single specification that determines compatibility. Your device must accept this exact outer diameter and pin dimensions. The adapter delivers up to 100 W only when paired with a USB-C PD source negotiating 18.5 to 20 V.

How it compares

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

Price $6.99
Cheaper than about 90% 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 7.9 x 0.9 mm barrel plug to my laptop without damaging the port?

Align the centre pin and outer sleeve of the 7.9 x 0.9 mm male tip with the laptop's DC jack, then push straight in until it seats firmly; forcing it at an angle bends the pin and is the step most people get wrong.

Will the nylon-braid cable or the USB-C female port need replacement after daily plugging and unplugging?

The 8 cm nylon-braid cable resists fraying, but the USB-C female port is rated for thousands of cycles; if it becomes loose or intermittent, replace the whole adapter cable rather than attempting a port repair.

At what point does the 100 W power limit throttle charging during sustained heavy workloads?

The adapter delivers up to 100 W at 18.5-20 V; if the laptop draws more than 100 W under load, the adapter will hit its current limit and the system will throttle or draw from the battery instead.

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