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Compact black USB-C power brick with detachable AC cord, 90W rating visible on label

Dell 90W USB-C AC Adapter SK90B190474

SKU CH-H073-QH3M8

90W USB-C adapter charges compatible Dell XPS, Latitude and Inspiron laptops with PD negotiation down to 65W and 45W

  • Battery voltage rating20 V
  • Battery capacity2,000 mAh
  • Power adapter voltage20 V
  • Power adapter current11.8A
  • Power adapter wattage85 W
  • Compatible withLaptops
  • Delivers up to 90W via USB-C PD for fast charging
  • Works with Dell XPS 13, Latitude 5000/7000 and Inspiron 13/14/15 USB-C models
  • Multi-protection safeguards against over-voltage, over-current, over-temperature and short-circuit
  • 100-240V global input with detachable AC cord for worldwide travel
  • Not suitable for barrel-tip, MagSafe, Surface or >90W Dell XPS 15/17 Precision Alienware

90W USB-C Dell Adapter

The Dell SK90B190474 is a 90W USB-C AC adapter built for Dell laptops that charge through a USB-C Power Delivery port. It suits professionals, students and travellers who need a reliable spare or replacement for daily work and mobile use.

90W PD Output Profile

The adapter delivers up to 20V at 4.5A (90W) with PD smart negotiation and safely down-negotiates to 65W or 45W for compatible Dell USB-C models. Input accepts 100-240V at 50-60Hz and the unit includes short-circuit, over-voltage, over-current and over-temperature protection.

Travel-Ready Spare Charger

A detachable AC cord and compact body make it easy to carry between conference rooms, coworking spaces and hotel desks. It requires a laptop with a USB-C PD charging port and is not suitable for barrel-tip, MagSafe or Surface connectors; higher-wattage Dell models such as XPS 15 or 17 need a larger adapter.

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 nameSK90B190474
Part numberLa90pm130
Power
Battery voltage rating20 V
Battery capacity2,000 mAh
Power adapter voltage20 V
Power adapter current11.8A
Power adapter wattage85 W
Size & build
Product weight12 oz
Compatibility
Compatible withLaptops

Questions about this item

What does the 90W rating mean for charging speed on my Dell XPS 13?

The adapter negotiates up to 20V at 4.5A for 90W peak, then safely down-negotiates to 65W or 45W if your laptop requests less power.

How does the USB-C Power Delivery interface limit what this charger can deliver?

It supports fixed PD profiles of 5V/3A, 9V/3A, 12V/3A and 20V/4.5A, so maximum output is capped at 90W and it cannot supply higher voltages or proprietary Dell barrel-pin voltages.

What physical connections and clearances does this adapter need to work?

It requires a USB-C PD charging port on the laptop, a standard IEC C7 figure-8 mains lead for the 100-240V input, and enough desk space for the compact brick and detachable cord.

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