Modern Asus gaming and creator laptops are built to deliver desktop-class performance in a portable form.
ROG Strix and Zephyrus systems, TUF Gaming machines, ProArt StudioBook workstations and high-end VivoBook Pro or ZenBook Pro Duo models can all draw a lot of power under load.
For many of these devices, the correct AC adapter is a 20V 12A 240W charger with a 6.0 × 3.7 mm connector.
In this article we explain what this specification means, which kinds of Asus laptops typically use a 240W adapter,
and how to confirm compatibility before you order a replacement.
The focus is on our 20V 12A 240W Asus-compatible adapter (6.0 mm × 3.7 mm tip), supplied with a country-specific power cord and backed by a 12-month warranty and 30-day return policy.
1. Why many Asus laptops need a 240W power adapter
Entry-level notebooks are often shipped with 45W or 65W chargers.
High-performance Asus laptops are different. They combine:
- desktop-grade CPUs,
- powerful NVIDIA or AMD dedicated GPUs,
- high-refresh-rate displays and RGB lighting, and
- multiple storage devices and peripherals.
When you are gaming, rendering video, compiling code or training AI models, the system can draw well over 200W from the adapter.
If the charger cannot supply enough power, you may see:
- the battery slowly discharging even while plugged in,
- sudden frame-rate drops or CPU/GPU throttling,
- unexpected shutdowns under heavy load, or
- the adapter itself running very hot.
This is why Asus specifies a 240W adapter for many ROG, TUF and ProArt models: it provides enough headroom to keep the laptop stable at full performance.
A replacement charger must match this capability.
2. Understanding the specification: 20V, 12A, 240W, 6.0 × 3.7 mm
The label on your original Asus adapter usually lists four key electrical values:
- Input: 100–240V ~ 50–60Hz – universal input for worldwide use.
- Output voltage: 20V DC.
- Output current: 12A.
- Output power: 240W (simply 20V × 12A).
Our 20V 12A adapter is designed to match this output rating. It also uses the same
6.0 mm (outer) × 3.7 mm (inner) round DC connector with center pin
that Asus uses on these high-power systems.
A few important rules:
- Voltage must match exactly. 20V laptops should always be powered by a 20V adapter.
- Current / wattage must be the same or higher. A 240W charger can safely replace a 230W unit, but a 180W adapter should not be used on a system that requires 240W.
- The connector size and shape must be identical. Even a small mismatch can cause a loose connection, overheating or no power at all.
Technically, our adapter provides:
- Input: 100–240V 50–60Hz (suitable for EU, UK, US, AU and most other regions)
- Output: 20V 12A, 240W
- Connector: 6.0 mm × 3.7 mm barrel with center pin
- Colour: Black
- Package: 1 × charger + 1 × mains power cord matched to your delivery country
- Warranty: 12 months, with 30-day return period
Important note: this is a high-quality, fully compatible replacement adapter for Asus laptops. It is not an original Asus-branded charger.
3. Typical Asus series that use a 240W 6.0 × 3.7 mm adapter
Because Asus has many configurations and regional variants, providing an exhaustive list is almost impossible.
However, this 20V 12A 240W adapter typically supports high-power models from the following families:
ROG Strix & TUF Gaming
Many 15-inch and 17-inch ROG Strix and TUF Gaming laptops use a 240W adapter, including numerous
G15 / G16 / G17 / SCAR and A15 / A17 / F15 / F17 / FX507 / FX707 models.
These systems ship with powerful RTX graphics and high refresh-rate panels, which require a stable 240W power supply.
ROG Zephyrus and ROG Flow
ROG Zephyrus G14, G15, G16 and Duo variants, as well as some ROG Flow X16 configurations,
also rely on a 20V 240W adapter with the same 6.0 × 3.7 mm connector.
They are slim but extremely power-hungry under load.
ProArt StudioBook, ExpertBook and ProArt Station
Creator-focused workstations such as ProArt StudioBook 15 / 16 / 17 and
certain ExpertBook B6 and ProArt Station models
use the same high-power AC adapter to drive professional GPUs and colour-accurate displays.
VivoBook Pro & ZenBook Pro Duo
Many VivoBook Pro 15X / 16X and ZenBook Pro Duo laptops
with high-end CPUs and RTX graphics also require a 240W adapter.
Their second screens and advanced cooling systems further increase power demand.
Again, this is only a partial overview. The safest way to confirm compatibility is to follow the checklist in the next section.
4. Compatibility checklist before you buy
To avoid ordering the wrong charger, follow these four steps carefully:
1. Check the voltage and wattage on your original adapter
- Look at the label on your current Asus adapter.
- Confirm that the Output line states 20V and a power rating of around 240W (for example 20V 12A).
2. Compare the connector size and shape
- Visually compare the plug to our description and photos: it should be a rounded barrel connector with a metal pin in the centre.
- The outer diameter should be approximately 6.0 mm, and the inner diameter about 3.7 mm.
- If your original plug looks thinner or thicker, or has a completely different shape (USB-C, square, etc.), this is not the right adapter.
3. Match the Asus part number when possible
- On the adapter label you’ll usually see an Asus part number such as ADP-240EB B, A20-240P1A or 0A001-00xxxxx.
- Our charger is designed to replace a wide range of these part numbers, including
0A001-00392200, 0A001-00392300, 0A001-00970000, 90XB05IN-MPW090, AD240-00E, ADP-240EB B, ADP-240EB BD and many others. - If your number appears in this list, this is a good indication that the adapter is compatible.
4. Confirm with your laptop model
- Check the model printed on the bottom of the laptop (for example ROG Strix G513QM, TUF Gaming A15 FA507RW, ProArt StudioBook H7600, ZenBook Pro Duo UX582 and so on).
- Compare it with the compatible model list on the product page. If your exact model or series is listed and it uses a 20V 240W adapter, the charger is suitable.
If you are unsure at any step, it is always better to contact support with a photo of your original adapter label and laptop model.
This avoids returns and ensures you receive the correct part on the first attempt.
5. Frequently asked questions
Can I use a higher-wattage adapter on my Asus laptop?
Yes, as long as the voltage and connector are identical, using an adapter with equal or higher wattage is safe.
The laptop will only draw as much current as it needs. What you must never do is use a charger with lower wattage than required.
Is a 19.5V adapter close enough to 20V?
No. Always follow the voltage specified by Asus for your particular model.
A 19.5V adapter may work on some systems but is not designed for laptops that require 20V, and using it long term can create stability or reliability issues.
Is this an original Asus charger?
No. Our 20V 12A 240W adapter is a high-quality compatible replacement designed to meet or exceed the performance of the original part.
It is fully tested for safety and reliability and comes with 12-month warranty and 30-day return support.
Does it support worldwide voltages?
Yes. With an input rating of 100–240V 50–60Hz, the adapter can be used almost anywhere in the world.
We include a power cord that matches the plug type used in your delivery country (EU, UK, US, AU, etc.).
6. Final thoughts
If your original Asus 240W power brick is lost, damaged or simply worn out, choosing the right replacement is critical to keep your laptop running safely at full speed.
A 20V 12A 240W adapter with a 6.0 × 3.7 mm connector is the correct solution for many ROG, TUF, Zephyrus, ProArt, VivoBook Pro and ZenBook Pro Duo systems.
By checking four simple things—voltage, wattage, connector size and compatibility with your model or part number—you can be confident that this adapter will be a reliable, long-term replacement for your original charger.
With proper power, your Asus laptop can continue to deliver the gaming performance or creative productivity it was designed for.