1MDV8 / Y90RR / GMT0M / ADP-330AB 330W 19.5V 16.9A AC Power Adapter Charger for Alienware X51 M18x Computers

High-output 330W AC power adapter designed for Alienware systems that require a 19.5V 16.9A power supply with the large 7.4 mm center-pin barrel connector. This adapter provides the correct 330W power class for performance desktops and notebooks that require higher wattage for stable operation, proper system recognition, and full-load performance.

This unit is suitable for select Alienware X51 desktop systems, Alienware M18x notebooks, and other compatible Alienware models that use the same 330W 19.5V large-barrel center-pin adapter style.

Technical Specifications

• Product Type: AC Power Adapter / Charger
• Wattage: 330W
• Output Voltage: 19.5V
• Output Current: 16.9A
• Input Voltage: 100-240V AC
• Input Frequency: 50/60Hz
• DC Connector: 7.4 mm x 5.0 mm barrel connector with center pin
• Polarity: Center positive
• Compatibility Class: Alienware 330W large-barrel center-pin adapter
• Adapter Style: External power brick
• Indicator: Adapter body power status LED, where applicable
• Protection Features: Over-voltage, over-current, over-temperature, and short-circuit protection
• Included Item: 330W AC Power Adapter

Interchangeable / Replacement Part Numbers

1MDV8, Y90RR, GMT0M, ADP-330AB, 332-1432, 450-BBQG, F0K0N, GT1CX, DA330PM111, 331-2429, KN7XW, 5X3NX, LA330PM160, XM3C3

✅ Confirmed Compatibility

Please note that the following list is not exhaustive. Compatibility depends on your system's specific configuration. It's essential to verify compatibility with your system or enclosure manufacturer prior to installation.

✔️ Alienware X51 Series: X51, X51 R1, X51 R2, X51 R3
✔️ Alienware M18x Series: M18x, M18x R1, M18x R2
✔️ Alienware 18 Series: Alienware 18
✔️ Alienware 330W Large-Barrel Systems: Select Alienware systems requiring a 19.5V 16.9A 330W AC adapter with a 7.4 mm x 5.0 mm center-pin connector

☑️ Key Features

☑️ Provides true 330W output for high-power Alienware systems
☑️ 19.5V 16.9A output supports systems that require the 330W adapter class
☑️ Large 7.4 mm x 5.0 mm center-pin barrel connector for compatible Alienware platforms
☑️ Helps reduce low-wattage adapter warnings, charging interruptions, and performance throttling on systems that require 330W input
☑️ Wide-range 100-240V AC input for standard worldwide power compatibility
☑️ Built-in protection against over-voltage, over-current, over-temperature, and short-circuit conditions
☑️ Direct replacement for multiple 330W adapter part numbers including 1MDV8, Y90RR, ADP-330AB, DA330PM111, and LA330PM160

⚙️ Fit Notes

• This is not a USB-C charger.
• This adapter uses the large 7.4 mm x 5.0 mm barrel connector with center pin.
• Always confirm your original adapter output is 19.5V and that your system requires the 330W power class.
• Using a lower-wattage adapter on a system that requires 330W may cause BIOS warnings, reduced performance, battery charging issues, or power instability.
• Compatible part numbers may appear under different manufacturer labels depending on production batch.