GZYDR 20V 12A 240W Laptop AC Adapter for ASUS

High-output 240W replacement AC adapter delivering 20V/12A power for compatible ASUS ROG Zephyrus, ROG Strix and select ZenBook Pro Duo gaming laptops.

When your original charger fails or you need a spare for travel, the GZYDR 20V 12A 240W A20-240P1A (ADP-240EB B) AC adapter supplies the voltage and current these high-performance ASUS notebooks demand. This replacement offers the same 6.0 x 3.7 mm DC plug size and broad 100–240V input range, so it works globally with the included US power cord. It’s engineered to pair with many ROG Zephyrus and ROG Strix models and fits laptops that accept up to 240 watts of power.

Which ASUS laptops will run on this 20V 12A GZYDR adapter?

The adapter is compatible with a long list of ASUS gaming and pro models that require 20V/12A power and use a 6.0×3.7 mm barrel connector. Always check the original adapter’s specs before buying; do not use if your laptop requires more than 240W.

• ROG Zephyrus: Duo 15 GX550LXS, GX550LWS; S15 GX502 variants; M16 GU603HM/HR
• ROG Strix / Scar: G533/G733/G713 series and Scar 15/17 high-performance models
• ZenBook Pro Duo: UX582 and other compatible 20V/12A models
• Matches ADP-240EB B replacement part numbers and 6.0 mm x 3.7 mm plug

How safe and reliable is this third-party GZYDR power supply?

This replacement adapter is built with common safety features to protect your laptop and power source during normal use. It provides steady DC output and accepts worldwide AC input, but should be matched by model and wattage to prevent damage.

• Stable 20V/12A output for consistent performance under load
• Broad 100–240V AC input works with global voltages and frequencies
• Included US power cord for immediate use; follow laptop safety guidelines
• Not intended for laptops needing more than 240W—verify first

What comes in the box and how do I identify the right connector?

The package contains the GZYDR 240W adapter and a US-style power cord for plug-and-play convenience. The DC plug on this unit measures 6.0 mm outer by 3.7 mm inner—confirm your laptop’s barrel size before ordering.

• Included: 1 x 20V 12A 240W adapter, 1 x US plug power cord
• DC plug dimensions: 6.0 mm × 3.7 mm—matches many ASUS gaming laptops
• Look for ADP-240EB B or equivalent part number on OEM chargers for match
• Do not buy if the laptop’s required wattage exceeds 240W

Will this adapter support heavy gaming or workstation use?

Yes—if your laptop’s original adapter is specified at 240W or lower, this GZYDR unit can supply sustained power for demanding tasks. For rigs that draw more than 240W, choose an adapter that meets or exceeds the OEM wattage instead.

• Designed to handle high CPU/GPU loads for compatible 240W-rated laptops
• Provides steady current to minimize throttling due to insufficient power
• Check OEM wattage; using an underpowered adapter can cause instability
• Works best as a replacement or secondary charger for travel and backups

Who this is for: Gamers and content creators who own compatible ASUS ROG Zephyrus, ROG Strix, Scar or ZenBook Pro Duo laptops and need a reliable 240W replacement or spare charger. It’s suitable for users who require full 20V/12A output with a 6.0×3.7 mm barrel plug and who verify their laptop does not demand more than 240 watts. If you need a charger for daily heavy workloads and your OEM adapter lists ADP-240EB B or similar 240W specs, this GZYDR unit is a practical, travel-ready option.