Does ASUS ROG Zephyrus G14 work with 240W Barrel Connector Charger?

What works & limitations

• Charges G14 from 0% to 100% in approximately 1 hour 45 minutes when the laptop is off — the 90Wh battery at 240W input charges at roughly 65W net (after system standby draw) when powered off
• Maintains full charge during sustained gaming at maximum settings with NVIDIA RTX GPU active at full TGP — total system draw at Turbo mode peaks at approximately 215–220W, well within the 240W adapter's rating
• Enables ROG Boost and Turbo CPU and GPU performance modes via ASUS Armoury Crate — in Turbo, the RTX 4090 (GA403) or RTX 4060 (GA402) runs at its full TGP of 80–100W plus CPU boost
• Supports the 240Hz display at maximum refresh rate under gaming load without battery drain — confirmed across G14 models GA402XV and GA403UV at 1080p and 2560×1600 respectively
• Compatible with G14 models GA401, GA402, GA403 series across 2021 through 2024 — verify the 6.0mm outer × 3.7mm inner barrel tip before purchasing a replacement; some reseller listings incorrectly show 5.5mm tips
• ASUS Intelligent Cooling engages full thermal management at maximum GPU TDP when 240W is present — fan speed profile, CPU boost limits, and GPU power limits all unlock at their maximum rated values
• The 240W barrel adapter is not USB-C and does not provide data transfer — it is a DC power-only connection (19.5V × 12.31A); no Thunderbolt, USB, or DisplayPort signal passes through the barrel
• Third-party 240W barrel adapters exist but tip tolerances vary critically: the correct spec is 6.0mm outer diameter, 3.7mm inner pin — a 5.5mm × 2.5mm tip (common in many 240W gaming adapters) will appear to fit loosely and cause intermittent charging or overheating at the connector
• The G14 barrel connector uses 6.0mm outer and 3.7mm inner tip at 19.5V × 12.31A (240W total); ASUS part number for the 2023 G14 adapter is ADP-240CB B — the 2022 model uses ADP-240MB B; both are 240W but confirm the part number from the label on your existing adapter before ordering a replacement
• ASUS sells a 240W adapter in a reduced form-factor (slim GaN design, available via the ROG accessories store) — approximately 20% smaller and lighter than the standard ADP-240CB B brick while maintaining the same 19.5V output; confirmed compatible with all GA402 and GA403 models
• When traveling: the G14 supports simultaneous input from the barrel port (primary 240W) and USB-C port (secondary up to 100W) — the barrel adapter is the active power source; USB-C connected simultaneously passes power to a connected device (phone or tablet charging passthrough) in some configurations, though this is not documented behavior and results vary by firmware version
• ASUS recommends Battery Care Mode in MyASUS (charge to 80% limit) for daily desk use with the 240W adapter always connected — this reduces charge cycle stress on the 90Wh battery and extends long-term capacity retention; the 80% limit can be toggled in MyASUS > Battery Care