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Compact black rectangular AC adapter with 4.0mm barrel connector and detachable power cord

usbroway

usbroway 45W AC Adapter 19V 2.37A 4.0mm*1.2mm laptop charger

SKU CH-A9BS-JE1Z8

A 45W laptop charger delivering 19V at 2.37A via a 4.0mm*1.2mm connector, compatible with numerous Asus models including UX305, UX330 and X540 series

  • Battery TypeLithium-Ion
  • Delivers 45W at 19V 2.37A for reliable charging
  • 0mm×1.2mm barrel fits listed Asus models
  • 100–240V 50/60Hz input works worldwide
  • CE and FCC certified for safety compliance
  • Brand-new unit with 30-day money-back guarantee

45W AC Adapter for Asus Laptops

This 45W AC adapter delivers 19V at 2.37A through a 4.0mm by 1.2mm connector. It accepts a universal 100-240V input at 50 or 60Hz for worldwide use. The unit is designed as a replacement charger for a wide range of Asus laptop models listed by the supplier.

Suitable for owners of listed Asus ultrabooks

Buyers with compatible models such as the UX305, UX330, X540 or Q302 series can use this adapter as a direct power replacement. It is not for users whose laptops require a different connector size, voltage or higher wattage than 45W. The adapter also does not suit devices that use USB-C Power Delivery or proprietary barrel sizes other than 4.0mm by 1.2mm.

Connector size 4.0mm by 1.2mm

The barrel connector measures 4.0mm outer diameter by 1.2mm inner diameter, which is the single specification that determines physical fit. If the original charger for your Asus model uses this exact connector size and 19V output, this adapter will connect securely. A mismatch in either dimension will prevent the plug from seating correctly.

Highlights

  • Delivers 45W at 19V 2.37A for reliable charging
  • 0mm×1.2mm barrel fits listed Asus models
  • 100–240V 50/60Hz input works worldwide
  • CE and FCC certified for safety compliance
  • Brand-new unit with 30-day money-back guarantee

Specifications

Battery TypeLithium-Ion

Questions about this item

What connector size does this 45W AC adapter use?

The adapter uses a 4.0 mm by 1.2 mm barrel connector that fits the listed Asus models such as the UX305, UX310U and X540SA.

How do you install this charger and what step is often missed?

Plug the AC cord into the brick, insert the 4.0 mm by 1.2 mm tip firmly until it seats, then connect the mains plug; the step often missed is pushing the barrel in fully so the laptop detects the 19 V 2.37 A supply.

When will this adapter need replacement?

Replace the unit if the cable frays near the barrel, the brick overheats, or the output drops below 19 V 2.37 A after extended use.

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