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Powering ASUS G14, G16, and G18 (2024–2025): SlimQ's GaN Chargers and Mini Port Solutions

Powering ASUS G14, G16, and G18 (2024–2025): SlimQ's GaN Chargers and Mini Port Solutions

Introduction

The 2024–2025 ASUS ROG Zephyrus series, including the G14, G16, and G18 models, has introduced a significant change in power connectivity by adopting a new proprietary power connector, commonly referred to as the "Rectangle Connector" or "Mini Port." This shift from the traditional round-barrel DC jacks to a slim, rectangular connector has presented challenges for users seeking additional or replacement chargers.

Professionals and gamers alike require reliable, high-performance charging solutions. However, the limited availability and high cost of official ASUS chargers have created a demand for alternative options. SlimQ addresses this need with its innovative GaN chargers and compatible Mini Port connectors.

Image: Close-up of the Mini Port (rectangle) connector on the cable side used in ASUS G14/G16/G18 2024–2025 series.

Understanding the New ASUS Rectangle Connector

ASUS officially refers to its new proprietary connector as the "ASUS Slim Power Jack." While some users may informally call it the "Mini Port" or "Rectangle Connector," the Slim Power Jack is the consistent name used in ASUS documentation to emphasize its compact form and upgraded power capabilities.

Prior to 2024, ASUS laptops used the standard cylindrical (round-barrel) DC connectors, which were compatible across many models but limited in both mechanical durability and maximum power throughput. These older connectors:

  • Featured a bulkier, protruding form.

  • Were more prone to wear from repeated use and bending.

In contrast, the Slim Power Jack:

  • Uses a flat, low-profile shape that fits flush against the laptop chassis.

  • Is engineered to reliably support high power levels, up to 380W.

  • Offers improved durability and reduced strain on the power port.

This upgrade aligns with ASUS’s goal of delivering higher performance while maintaining device portability. However, it also means that existing round-barrel chargers are no longer compatible with newer models, requiring users to adopt chargers that support the new standard.

Compatibility Overview

The Rectangle Connector is utilized in a variety of ASUS models. Some representative examples include:

  • ROG Zephyrus G14 (2024): GA403UI / UV / UU series – 180W

  • ROG Zephyrus G16 (2024): GU605MU / MZ / MY – 200W to 240W

  • ROG Strix G18 (2025): G815LR / RTX 5070 and other 280W configurations

Note: This is not an exhaustive list. Compatibility is determined by the connector shape and the laptop's power requirements.

Impact of the Mini Port Change on ASUS Users

The introduction of the new Mini Port (Rectangle Connector) represents a significant shift in ASUS’s power delivery standard. One of the most immediate consequences for users is that previous generation chargers are no longer compatible. The traditional round-barrel connectors used in older ASUS laptops cannot connect to the updated Slim Power Jack, making legacy chargers unusable for those upgrading to 2024 and newer models in the Zephyrus G14, G16, and G18 series.

This change has caught many users off guard—especially professionals and power users who often keep spare or travel chargers on hand. Despite having similar voltage or wattage, older adapters physically cannot interface with the new port, leaving many searching for reliable alternatives.

Inconvenience with Official ASUS Chargers

Securing a replacement charger directly from ASUS is not always straightforward:

  • Limited Availability: Official chargers are frequently out of stock or unavailable in certain regions.

  • High Cost: OEM charging units are often priced at a premium, which can be burdensome for users needing a second unit.

  • Lack of Flexibility: ASUS-branded chargers are generally designed to power one device at a time, offering no additional USB ports or multi-device functionality.

SlimQ's Solution: GaN Chargers with Mini Port Compatibility

SlimQ offers a versatile and technically advanced charging solution through its precision-engineered GaN (Gallium Nitride) chargers, paired with custom-built Mini Port connectors. SlimQ is known for pioneering compact, high-efficiency power products that meet the rigorous demands of modern professional and gaming laptops. This combination provides:

  • High Power Output: SlimQ chargers are available in different models including 150W, 240W, and 330W, with a 500W model currently in development. These power levels meet the needs of various ASUS laptops from mid-range to the most power-hungry gaming configurations.

  • Multi-Device Charging: Equipped with multiple ports, including USB-C PD 3.0, allowing simultaneous charging of laptops and other devices.

  • Portability: Compact and lightweight design makes it ideal for professionals and gamers on the move.

  • Compatibility: SlimQ's Mini Port connectors use the same physical connector as ASUS's new power interface, officially named the "ASUS Slim Power Jack." This ensures full compatibility and seamless integration with 2024–2025 ASUS models without any compromise.

Two Connector Forms: Tip and Short Cable

SlimQ offers its Mini Port (ASUS Slim Power Jack) connector in two physical forms to suit different user preferences:

Image: Side-by-side comparison of the Tip-Style and Short Cable Extension connectors.

1. Tip-Style Connector (the right one)

This version attaches directly to the end of the SlimQ charger’s DC output port without any extra cable.

Benefits:

  • Extremely compact for maximum portability.

  • Fewer components mean lower weight and less cable clutter.

  • Ideal for users who keep the charger in a fixed location (e.g., desk setup).

2. Short Cable Extension Connector (the left one)

This version includes a short cable (about 10–15cm) between the DC output and the Mini Port tip.

Benefits:

  • Provides more flexibility when plugging into tight spaces.

  • Reduces mechanical stress on the laptop’s power port.

  • Easier to manage cable orientation in mobile setups or when used on a lap or uneven surface.

Both versions use the same SlimQ-engineered connector tip that matches ASUS's official Slim Power Jack specification. Users can choose the form that best matches their usage scenario.

Both options are available at SlimQ’s product page.

Additional Resources

For more detailed specifications and purchasing options:

Conclusion

The 2024–2025 ASUS ROG Zephyrus laptops have transitioned to a new ASUS Slim Power Jack, offering better power delivery and mechanical durability but creating compatibility challenges for existing users. SlimQ fills this gap with a lineup of high-performance GaN chargers and two flexible connector options that mirror the official ASUS interface. With models from 150W to 330W and a 500W version on the horizon, SlimQ provides a practical and forward-compatible solution for professionals and gamers needing powerful, portable charging.

 

For more information on SlimQ's products and to find the right charger for your ASUS laptop, visit the SlimQ Official Store.

 

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Asus G14 G16 G18 charger 2024 2025Asus Slim Power Jack connectorgaming laptop charger