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Black rectangular 90W USB-C charger with indicator light

DELL DL65120400 90W USB-C laptop charger for Asus Vivobook

SKU CH-7DJ8-CBD7V

90 W USB-C power adapter for Asus Vivobook models including S14, S15, S16 and S17, delivering 20 V at 4.5 A with FCC, CE and RoHS certification

  • Battery voltage rating20 V
  • Power adapter voltage20 V
  • Power adapter current11.8A
  • Power adapter wattage85 W
  • Compatible withFor Asus Vivobook S17 18 14 15 16 Flip OLED K3704 M1807HA S5
  • Key featuresCharging Indicator, Proprietary, 20 V, 4.5 A
  • 90 W output powers demanding Vivobook models
  • USB-C connector fits listed Asus part numbers
  • 100-240 V input works worldwide without a converter
  • Safety certifications include FCC, CE and RoHS
  • Charging indicator shows power status at a glance

DELL DL65120400 90W USB-C charger

The DELL DL65120400 is a 90W USB-C power adapter built for Asus Vivobook models across 14, 15, 16, 17 and 18 inch sizes including Flip OLED variants. It delivers 20V at 4.5A with a 100-240V 50-60Hz input range for worldwide use. FCC, CE and RoHS certifications cover over-voltage, short-circuit and over-charge protection. A charging indicator shows active status.

Replaces Asus ADP-90RB E and A21-090P2A

This unit directly replaces the Asus ADP-90RB E and A21-090P2A adapters supplied with compatible Vivobook and Zenbook models. The jump is worth it when the original charger is lost, damaged or no longer holds a secure USB-C connection. It restores full 90W charging without needing a proprietary barrel connector.

90W output handles Vivobook S and Zenbook 14X loads

At 90W the adapter comfortably powers Vivobook S series and Zenbook 14X OLED systems under typical workloads including charging while in use. Headroom narrows when sustained CPU and GPU loads push combined draw above the 85W continuous rating noted in specifications. Buyers needing higher continuous power for larger workstation-class laptops should look elsewhere.

How it compares

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

Price $41.99
Pricier than about 73% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameDELL
Model nameDL65120400
Power
Battery voltage rating20 V
Power adapter voltage20 V
Power adapter current11.8A
Power adapter wattage85 W
Compatibility
Compatible withFor Asus Vivobook S17 18 14 15 16 Flip OLED K3704 M1807HA S5606MA S5606CA M5606UA M5606WA TP3604 S5506MA M5406WA S5406MA K3405VF A21-090P2A 14X UX3404 V UX5400Z

Questions about this item

What USB-C connector size does the DELL DL65120400 charger use for Asus Vivobook models?

The charger uses a standard USB Type-C connector that fits the charging port on compatible Vivobook S17, 18, 14, 15, 16 Flip OLED and Zenbook 14X models.

How do I install the 90W USB-C charger and what step is often missed?

Plug the AC cord into the adapter, connect the USB-C plug firmly into the laptop port, then plug the AC cord into a 100V-240V 50-60Hz outlet; the step often missed is verifying the charging indicator lights up.

When will the DELL DL65120400 adapter need replacement?

Replace the adapter if the USB-C cable frays, the charging indicator stops lighting, output voltage drops below 20V 4.5A, or the unit shows physical damage or overheating during use.

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