Dell LA90PM170 USB-C 90W AC Adapter - Reliable Fast Charging

Our review of the Dell LA90PM170 USB-C 90W AC adapter finds it best suited for users who need a straightforward, high-power Type-C charger for modern Dell laptops. The biggest reason to buy is its ability to deliver up to 90 watts through a USB Type-C connector with automatic voltage selection, so it can fast-charge compatible XPS and Latitude models while meeting the laptop's voltage and current requirements. It is a simple, original-design Dell adapter that focuses on compatibility and consistent power delivery rather than extra frills.

Key Features

• 90W USB-C output: Provides up to 20V/4.5A for laptops that require higher wattage and supports lower voltages for smaller devices.
• Multi-voltage support: Native support for 5V, 9V, 15V and 20V ensures safe charging across a range of Dell notebooks and accessories.
• Type-C connector: The USB Type-C tip offers a modern, reversible connection that simplifies plugging in and supports power delivery standards.
• OEM compatibility: Identified with factory model numbers LA90PM170 and DA90PM170 and compatible SKU references for easy matching with Dell laptops.
• Wide laptop support: Works with numerous Latitude, XPS and Precision models, making it a practical spare or replacement for users with multiple Dell machines.

Who It's For

This adapter is aimed at Dell laptop owners who need an original-spec Type-C charger capable of delivering up to 90W, including professionals using XPS 13/15 and Latitude lines that support USB-C power delivery. It is a good fit for IT departments and users who want a charger that meets the voltage and current needs of higher-performance notebooks without experimentation.

Shoppers who need ultra-compact travel chargers with multiple ports, or who want extra bundled cables and accessories, should look elsewhere; this product focuses on being an OEM-style single-port 90W Type-C adapter rather than a multiport hub. Users who require long-term extreme durability warranties may want to consider additional protection options, since some customers reported mixed longevity experiences.

Pros & Cons

Pros

• OEM design provides correct voltage and current for compatible Dell models, supporting reliable charging and fast top-up.
• Wide compatibility list covers many XPS, Latitude and Precision notebooks, making it versatile for Dell users.
• Type-C connector simplifies use across modern devices and handles multiple voltages automatically.
• Generally reported as a legitimate Dell part with accurate power delivery for demanding laptops.

Cons

• Some buyers report mixed impressions on value and long-term durability, so occasional failures have been noted.
• Single-port design means no extra USB-A or multi-device charging capability for travelers who want fewer chargers.

Specifications

Product type	90W USB-C AC adapter
Output voltages	5V / 9V / 15V / 20V
Output current	3A at 5V/9V/15V, 4.5A at 20V
Connector	USB Type-C
Compatible factory models	LA90PM170, DA90PM170
Compatible computer models	Selected XPS, Latitude and Precision series
Wattage	90W

Our Verdict

The Dell LA90PM170 90W USB-C adapter is a practical choice for Dell laptop owners who need proper OEM power delivery and broad model compatibility. It is worth buying as a replacement or spare for higher-powered XPS and Latitude machines because it delivers the voltages and amperages those systems require, though buyers seeking multiport convenience or guaranteed long-term durability should weigh accessories or extended protection plans.

Frequently Asked Questions

Will this charger fast-charge my compatible Dell laptop?
Yes. The adapter supports up to 20V/4.5A over USB-C and will provide fast charging on compatible Dell models that accept 90W or lower USB-C PD input.

Is this an original Dell part?
The adapter is offered as the original-style Dell LA90PM170/DA90PM170 design and matches the voltage and current specifications expected for those factory models.

Can I use this with other USB-C devices?
Yes, it will charge smaller USB-C devices at appropriate voltages (5V/9V/15V) but it is primarily intended for Dell laptops that require higher wattage.