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Black rectangular AC adapter with 10 ft power cord

WAWEIS

WAWEIS 12V 3.34A 40W AC adapter replacement for Mean Well GST40A12 GS40A12

SKU CH-EYD1-HZDZY

A 12 V 3.34 A 40 W AC/DC adapter with 10 ft cord, 100–240 V 50/60 Hz input and over-current, over-voltage, short-circuit and over-temperature protection, certified FCC CE RoHS

  • World-wide 100-240 V input works across mains standards
  • 40 W at 12 V 3.34 A matches original supply rating
  • 10 ft total cord length gives flexible placement
  • Over-current, over-voltage and short-circuit guards protect equipment
  • FCC, CE and RoHS certifications confirm safety compliance

12 V 40 W replacement adapter

The WAWEIS 12 V 3.34 A 40 W AC adapter replaces Mean Well GST40A12 and GS40A12 models. It suits owners of compatible laptops or equipment who need a direct substitute for the original supply. The unit accepts a wide 100-240 VAC 50/60 Hz input range. It is sold new and certified to FCC, CE and RoHS standards.

Practical limits of the interface

The adapter delivers a fixed 12 VDC at up to 3.34 A, capping output at 40 W. Devices that draw more current or require a different voltage cannot use this supply. The barrel connector polarity and dimensions must match the original specification exactly. No adjustable voltage or higher wattage is available from this model.

Build quality and daily use

Safety circuits include over-current, over-voltage, short-circuit and total-power protection. A 10 ft total cord length gives flexibility for desk or bench placement. The supplier notes high-quality wires, smart-chip thermal protection and anti-interference isolation materials. The unit is manufactured with 100 % new components and tested to strict quality-control standards.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 92% of the 27,790 comparable items (median $30.99).

Specifications

No published specifications for this item yet.

Questions about this item

Which power rating should I choose for the Mean Well GST40A12 replacement?

The adapter delivers 12 V at 3.34 A for a total of 40 W, matching the original GST40A12 specification exactly.

What does the 40 W rating mean when the adapter is powering my device?

It can supply up to 40 W continuously, so any load drawing 3.34 A at 12 V or less will run within its rated capacity.

What input voltage standard does the adapter accept and what does that cap in practice?

It accepts 100-240 VAC at 50/60 Hz worldwide, so the only practical limit is the 40 W output ceiling.

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