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

45W 19V 2.37A AC Adapter for ASUS ZenBook VivoBook X Series

SKU CH-SJKV-4XFY4

A 45-watt 19-volt power supply with a 4.0-millimetre connector replaces the original charger for compatible ASUS ZenBook and VivoBook laptops

  • Battery voltage rating20 V
  • Power adapter voltage20 V
  • Power adapter current11.8A
  • Power adapter wattage85 W
  • Measurements14.33 in W × 12.83 in H × 9.06 in D
  • Compatible withLaptops
  • 45 W output powers compatible ASUS laptops reliably
  • 19 V 2.37 A matches original charger specifications exactly
  • 0 mm × 1.35 mm connector fits listed ZenBook and VivoBook models
  • 100–240 V AC input works worldwide without a voltage converter
  • CE FCC RoHS certified for safety and environmental compliance

Replacement AC adapter for ASUS ZenBook and VivoBook

This 45W AC adapter supplies 19V at 2.37A and accepts 100-240V AC input at 50-60Hz. It is built as a direct replacement for the original charger on compatible ASUS ZenBook, VivoBook, X, Q, K, F, R and TP series laptops. The barrel connector measures 4.0mm by 1.35mm.

Steady output under continuous load

The unit delivers a constant 45W DC output without the short-term peak ratings seen on some travel chargers. CE, FCC and RoHS certifications confirm compliance with safety and emissions standards during prolonged operation. A lightweight corded design keeps the brick cool while the laptop draws full power for extended work sessions.

Connector size decides fit

The 4.0mm by 1.35mm barrel tip is the single specification that determines whether this adapter will seat securely in your device. Verify the tip dimensions against the original charger before ordering; an incorrect diameter or pin size will prevent charging even when voltage and wattage match.

How it compares

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

Price $23.99
Cheaper than about 64% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameDELL
Model nameSK90A190237
Part numberSK90A190237
Power
Battery voltage rating20 V
Power adapter voltage20 V
Power adapter current11.8A
Power adapter wattage85 W
Size & build
Measurements14.33 in W × 12.83 in H × 9.06 in D
Product weight0.191 kg
Compatibility
Compatible withLaptops

Questions about this item

Does the 19V 2.37A output run hot or make noise during all-day charging?

The adapter is a lightweight, corded-electric unit with CE, FCC and RoHS certification; it has no fan, so it operates silently and stays cool under normal 45W load.

What must I already own for this charger to work with my laptop?

You need an ASUS ZenBook, VivoBook, X, Q, K, F, R or TP series model that uses a 4.0mm×1.35mm DC jack and accepts 19V input — the connector size is fixed on this unit.

Will the 4.0mm×1.35mm tip fit my older UX305 or X553 without an adapter?

Yes — the tip matches the original charger supplied with UX305, UX330, X553 and the other listed models, so it plugs in directly.

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