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Compact black USB-C laptop power adapter with detachable cord

NShi

NShi DA90PM170 90W USB-C laptop replacement part

SKU CH-JSSK-993Y4 MPN DA90PM170

90W USB-C power adapter delivering 20V at 4.5A for compatible Dell laptops, includes AC adapter and power cord

  • Delivers 90 W for demanding Dell laptops
  • 20 V 4.5 A output matches original DA90PM170 spec
  • USB-C connector fits modern Dell charging ports
  • Also powers 45 W and 65 W devices at 15 V 3 A
  • Safety-tested adapter includes AC adapter and power cord

What this part is and who it fits

The NShi DA90PM170 is a 90W USB-C power adapter built as a direct replacement for the Dell DA90PM170 and LA90PM170 chargers. It delivers 20V at 4.5A for 90W output and also supports 15V at 3A for 45W or 65W laptops. The package includes the AC adapter and a power cord. It is intended for owners of compatible Dell laptops that require a 90W USB-C supply.

When to choose this adapter over the original

This unit replaces a lost or faulty Dell 90W USB-C charger without changing the voltage or connector. The jump is worth it when the original adapter has failed and a like-for-like 90W replacement restores full charging speed. It will not work properly if the laptop demands more than 90W, so buyers needing higher wattage must look elsewhere.

Limits of the USB-C power delivery used here

The adapter provides fixed output profiles of 90W, 65W and 45W through the USB-C connection. It cannot negotiate voltages or currents outside those specified profiles. Systems that require power delivery above 90W or different voltage steps will not charge correctly with this unit.

How it compares

Measured against everything we stock in Laptop Repair Parts, at today’s prices. Recalculated every night.

Price $50.99
Pricier than about 74% of the 1,151 comparable items (median $33.99).

Specifications

No published specifications for this item yet.

Questions about this item

Does this adapter include the AC power cord needed for the wall outlet?

Yes, the package contains one AC adapter and one power cord for mains connection.

What is the correct way to connect this 90W USB-C charger so the laptop recognises the full power rating?

Plug the AC cord into the adapter first, then into the wall, and finally insert the USB-C plug into the laptop; reversing the order can prevent 20V 4.5A negotiation.

When should the AC power cord be replaced on this 90W USB-C adapter?

Replace the cord if the insulation shows cracks, the plug pins are bent, or the connection becomes intermittent during use.

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