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Compact white GaN wall charger with foldable plug and two attached cables, USB-C and Dell proprietary

DELL GS-140W Dell-KMUS 140W GaN Charger 20V 6.75A USB-C Cable

SKU CH-MQ91-YHWC0

A 140W GaN wall charger with foldable plug, Dell-specific and USB-C cables, charging compatible laptops to 45% in 30 minutes

  • 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
  • Key featuresFast Charging, USB Type C, Corded Electric, 1, type c 2pin e
  • 140W GaN charger powers laptops in 30 minutes
  • Foldable plug design fits in pocket or bag
  • Two cables included for Dell laptops and USB-C devices
  • 28V 5A output with real-time temperature protection
  • Lightweight 220g adapter replaces bulky original charger

140W GaN Charger with Dual Cables

This 140-watt gallium-nitride charger supplies 20 volts at up to 6.75 amps through a single USB-C port using the PD 3.1 protocol. It ships with a Dell-specific cable for compatible Inspiron and XPS laptops plus a standard USB-C cable for phones, tablets and other devices. The foldable plug reduces bulk for travel or desk use.

Sustained high-power delivery

GaN circuitry maintains efficiency during prolonged charging sessions, limiting heat build-up even when the unit runs near its 140-watt ceiling. Real-time temperature monitoring protects both the charger and the connected device throughout the cycle. The 220-gram enclosure stays compact without sacrificing continuous output capability.

Replaces bulky original adapters for listed Dell

The unit directly substitutes the factory power supply for Inspiron 14 Plus, 5400 AIO, 7700 AIO, 15 7590, 15 7591, 15 7500, 15 7501, XPS 13 9370 and XPS 15 9550, 9560, 9570, 7590. Users carrying multiple devices can consolidate to one charger. It does not suit laptops requiring proprietary barrel connectors or higher wattage than 140 watts.

How it compares

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

Price $96.99
Pricier than about 90% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameDELL
Model nameGS-140 W Dell-KMUS
Part numberGS-140 W Dell-KMUS
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 weight220 g

Questions about this item

How much heat does the 140 W GaN charger produce when running all day?

GaN technology keeps heat low even at full 140 W output, and real-time temperature control prevents overheating during extended use.

Which cable do I need to charge a Dell XPS 15 9570 with this adapter?

Use the included Dell-specific cable; it fits XPS 15 9570 and other listed Inspiron and XPS models.

Can the USB-C cable charge a phone while the Dell cable powers an older Inspiron 15 7590?

The charger has one port; you must swap cables. The USB-C cable delivers up to 65 W for phones or tablets when connected.

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