DONGERDI 240W AC Adapter for Dell Alienware & Precision

If your Alienware or Dell Precision laptop needs a reliable power source, this DONGERDI 240W adapter is built to deliver stable charging for high-performance systems that accept a 7.4x5.0mm barrel plug. It offers wide voltage support for international use, multiple safety protections, and compatibility with numerous Dell part numbers and models so you can replace a lost or damaged OEM charger without sacrificing performance.

Will this adapter power my Alienware M15 or M17 gaming laptop?

Yes — when your laptop accepts a 7.4x5.0mm barrel connector and requires up to 240W, this adapter supplies the rated 19.5V at 12.3A. It’s designed to match or closely mirror the output of many Dell factory chargers used on the M-series and other gaming notebooks.

• Output: 240W (19.5V, 12.3A) suitable for demanding GPUs and CPUs.
• Connector: standard 7.4 x 5.0 mm barrel tip used by many Dell models.
• Compatibility list includes Alienware M15/M17 generations and compatible Precision models.

Is this adapter compatible with other Dell G and Precision laptops?

It supports a broad range of Dell G-series and Precision models that accept the same barrel size and fall within the 240W power limit. Review your laptop’s required wattage and connector type to confirm compatibility before purchasing.

• Works with many G15, G16, G7, G5 and G3 configurations that use a 7.4x5.0mm plug.
• Compatible with multiple Precision 7000/5000/3000 series models listed by Dell part numbers.
• Not suitable for Dell laptops that require more than 240W or alternate connector types.

Can I use this adapter overseas and is it safe to leave connected?

The adapter accepts 100–240V input at 50–60Hz, so it supports international voltages when you pair it with the appropriate plug adapter for the country. Built-in protections guard against common electrical faults, making it safe for extended use when operated within its specifications.

• Universal input voltage: 100–240V, 50–60Hz — suitable for travel with a plug adapter.
• Safety features: protection for short-circuit, over-current, over-voltage, and overheating.
• Durable housing and reinforced cable minimize wear from everyday use.

What should I check before buying to ensure perfect fit and performance?

Confirm your laptop’s required wattage and the physical barrel dimension — both must match the adapter’s specs. Also cross-check Dell part numbers or your original charger label to verify replacement compatibility.

• Match output: 19.5V and up to 12.3A (240W maximum).
• Verify connector: 7.4 x 5.0 mm barrel tip fits the laptop power jack.
• Compare Dell P/N or OEM charger markings against the compatibility list.

Who this is for: Gamers, creative professionals, and anyone using Dell Alienware or compatible Precision laptops that require a 240W barrel-plug charger will find the DONGERDI 240W adapter a practical replacement option. It’s aimed at users who need an affordable, high-power alternative to OEM adapters with international voltage support and multiple safety protections. If your system calls for more than 240W or uses a different connector, choose a model that matches those higher specs or alternate plug types instead.