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Compact black rectangular AC adapter with 4.0 by 1.35 mm barrel connector

E-buy

E-buy 19V 2.37A 45W AC Adapter 4.0×1.35mm for Asus ZenBook UX21A UX31A BX21A BX31A

SKU CH-WVB2-EF2YR

A 45W 19V 2.37A AC adapter with a 4.0×1.35mm connector for Asus ZenBook UX21A, UX31A, BX21A and BX31A models

  • Power adapter voltage19v
  • Power adapter current2.37A
  • Delivers 45 W of reliable power for your ZenBook
  • 19 V 2.37 A output matches original charger specifications
  • 0 × 1.35 mm connector fits listed UX and BX models
  • 100–240 V 50–60 Hz input works worldwide
  • Replaces ADP-40TH A, ADP-45AW, N45W-01 and 90-XB34N0PW00000Y part numbers

45 W 19 V Adapter for ZenBook

This 45 W AC adapter delivers 19 V at 2.37 A through a 4.0×1.35 mm barrel connector. It accepts 100-240 V input at 50-60 Hz for worldwide use. The unit replaces Asus part numbers ADP-40TH A, 90-XB34N0PW00000Y, ADP-45AW and N45W-01. It is a new replacement charger for compatible ultrabooks.

Suits owners of listed ZenBook models.

This adapter fits the Asus ZenBook UX21A, UX31A, BX21A and BX31A series including all listed sub-models such as UX21A-DB5x, UX31A-DB51 and UX31A-C4027H. Buyers with different connector sizes, voltage or wattage requirements cannot use this unit. Owners of Asus models not shown in the compatibility list should verify specifications before purchasing.

4.0×1.35 mm barrel connector decides fit

The 4.0 mm outer diameter and 1.35 mm inner diameter determine whether the plug seats correctly in the laptop power jack. Even with matching voltage and wattage, a different connector size will prevent connection. Confirm the original adapter tip measurements match 4.0×1.35 mm before ordering.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $17.99
Cheaper than about 76% of the 27,790 comparable items (median $30.99).

Specifications

Power
Power adapter voltage19v
Power adapter current2.37A

Questions about this item

Does the 4.0 mm × 1.35 mm barrel connector fit my Asus ZenBook UX31A?

Yes, the 4.0 mm × 1.35 mm tip matches the charging port on the listed ZenBook UX31A models.

How hot does the 45 W brick get when it runs all day?

The adapter is rated for continuous 19 V 2.37 A output; normal warmth is expected under full load.

Do I need a separate mains lead for the 100-240 V input?

The unit includes an integrated AC cable for 100-240 V 50-60 Hz mains supply.

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