How do I know if this 20V 6A charger fits my ASUS laptop?

You need to check two things on your old charger or the bottom sticker of your laptop: the output/input must be 20V and up to 6A, and the physical connector must be 4.5mm x 3.0mm with a small pin inside the barrel. If you are unsure, bring your laptop to our Sham Shui Po store for a free compatibility check.

Why isn't the wall power cord included in the box?

Many customers already have a perfectly working wall cord from their broken charger. By selling the adapter block separately, we help reduce electronic waste and keep the cost lower for you. If you need the C5 "Mickey Mouse" cord, you can purchase it separately from our website.

My old ASUS charger is 20V 4.5A (90W). Can I use this 120W charger?

Yes, absolutely! It is 100% safe to use a higher wattage (120W) charger on a laptop that requires less power (90W). The laptop will only draw the 4.5A it needs. In fact, the 120W charger will likely run cooler and last longer because it is not working at its maximum capacity.

ASUS 20V 6A 120W Laptop Charger

Name: ASUS 20V 6A 120W Laptop Charger | 4.5mm x 3.0mm Pin
Brand: ASUS
SKU: 21PA000806
Price: 269.0 HKD
Availability: InStock

Short Product Description

Is your ASUS laptop out of power? The ASUS 120W (20V 6A) AC Adapter is the perfect replacement charger to get you back to work. Featuring a specific 4.5mm x 3.0mm connector with a center pin, it delivers stable and safe power to compatible ASUS laptops.(Note: The AC power cord is NOT included).Need a replacement charger urgently for a deadline? Sun Cheong Computer Co. Ltd. has over 20 years of hardware experience. Visit our Sham Shui Po physical store to pick it up instantly and verify your laptop's compatibility on the spot!

Key Features

120W High-Power Output: Delivers a stable 20V 6A charge, perfect for high-performance ASUS laptops.
Specific Connector Size: Features a 4.5mm x 3.0mm plug with a center pin (Please verify before purchase).
Built-in Safety Protections: Guards against over-current, over-voltage, and short circuits to protect your laptop motherboard.
Eco-Friendly Replacement: Reuse your existing AC wall cable to reduce electronic waste.
AC Cord Sold Separately: Requires a standard C5 "Mickey Mouse" power cord (available via the link above).
Instant Store Pickup: Don't wait days for shipping; pick up your replacement charger immediately in Sham Shui Po.

Full Product Description

Reliable Power for Your ASUS Laptop

A dead charger shouldn't stop your productivity. Whether you are working from home, studying for exams, or managing an office, this OEM ASUS 120W AC Adapter provides a stable 20V 6A output to keep your laptop running smoothly. Built with premium components, it protects your valuable device against over-voltage, short circuits, and overheating, ensuring a safe charge every time.

Precision 4.5mm x 3.0mm Pin Connector

Laptop connectors can be confusing, but precision matters. This specific adapter is equipped with a 4.5mm (outer diameter) x 3.0mm (inner diameter) plug featuring a central pin. It is crucial to verify this dimension against your old charger, as ASUS uses several visually similar but differently sized connectors.

⚠️ Important: AC Power Cord Not Included

Please note that this product includes the AC adapter brick only. The wall-to-adapter power cable (C5 "Mickey Mouse" plug) is not included. If your old power cord is still functioning, you can simply plug it into this new adapter. If you need a new one, you can purchase the compatible C5 power cord directly from our store here: Mickey Mouse C5 Power Plug.

💡 Pro Tip from Our Technicians

"The most common mistake customers make when buying a replacement laptop charger is ignoring the amperage (A). If your original ASUS charger says '20V 4.5A' (90W), you can safely upgrade to this '20V 6A' (120W) adapter! The laptop will only draw the current it needs, and the higher-wattage charger will actually run cooler. However, never use a charger with a lower voltage or amperage than your laptop requires. If you are unsure about your connector size or voltage, bring your laptop down to our Sham Shui Po store! Our team at Sun Cheong Computer Co. Ltd. will test it for you to ensure a perfect fit."

Technical Specifications

Brand / Model: ASUS Compatible (Model: ADP-120CH B)
Input Voltage: AC 100-240V ~ 50-60Hz 2.5A (Worldwide compatibility)
Output Voltage: 20V
Output Current: 6A
Total Power: 120W
Connector Size: 4.5mm (Outer Diameter) x 3.0mm (Inner Diameter) with Center Pin
Power Cord Requirement: C5 "Mickey Mouse" Plug (NOT Included)
Package Includes: 1x AC Adapter Block Only

Delivery Options

Local delivery within Hong Kong and in-store pickup.
Free shipping for orders of HK$400 or above; HK$35 shipping fee for orders below HK$400.
Shipped by SF Express, usually dispatched the same day for orders confirmed before 6:00 PM (Mon–Sat).
Estimated delivery time: 1–3 business days after dispatch (Hong Kong).
In-store pickup details (location and time) will be confirmed by email or phone message.
Delivery times are estimates and may be affected by weather or unforeseen circumstances.

FAQ Section

How do I know if this 20V 6A charger fits my ASUS laptop?You need to check two things on your old charger or the bottom sticker of your laptop: the output/input must be 20V and up to 6A, and the physical connector must be 4.5mm x 3.0mm with a small pin inside the barrel. If you are unsure, bring your laptop to our Sham Shui Po store for a free compatibility check.
Why isn't the wall power cord included in the box?Many customers already have a perfectly working wall cord from their broken charger. By selling the adapter block separately, we help reduce electronic waste and keep the cost lower for you. If you need the C5 "Mickey Mouse" cord, you can purchase it separately from our website.
My old ASUS charger is 20V 4.5A (90W). Can I use this 120W charger?Yes, absolutely! It is 100% safe to use a higher wattage (120W) charger on a laptop that requires less power (90W). The laptop will only draw the 4.5A it needs. In fact, the 120W charger will likely run cooler and last longer because it is not working at its maximum capacity.

Target Users / Applications

University Students: Urgently needing a replacement charger to finish assignments and FYP projects when their original adapter dies.
Remote WFH Employees: Replacing a lost or damaged ASUS laptop power supply to maintain home office productivity.
IT Support Admins: Stocking up on reliable replacement 120W adapters for company-issued ASUS laptops.