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Rectangular black power brick with detachable cord

Mean Well

Mean Well GST120A20 20V 6A 120W power adapter

SKU CH-EP6V-D6V56 MPN GST120A20

Delivers 20 V at 6 A for 120 W output from 100-240 V input and includes a power cord

  • Works worldwide with 100-240V input
  • Delivers 120W continuous power for demanding devices
  • Stable 20V 6A output protects sensitive electronics
  • Built-in safeguards against short circuit and overheating
  • Includes power cord for immediate setup

120W 20V 6A power adapter

The Mean Well GST120A20 is a 120W AC adapter delivering 20V at 6A. It suits devices that require this exact voltage and current rating. The unit accepts a 100-240V input at 1.4A across 50/60Hz mains. Buyers needing a different output voltage or higher wattage should look elsewhere.

Bundled power cord included

A mains power cord is supplied with the adapter for immediate use. Overseas purchases may ship without the cord, so verify local plug compatibility. The adapter incorporates protection against incorrect voltage, short circuit and internal overheating. No additional software or configuration accessories are provided.

Straightforward desktop installation

Connect the mains cord, plug the barrel connector into the target device and power on. The adapter is tested for functional wiring, intact jacks and no loose internal particles. Minor cosmetic marks on the casing do not affect operation. Ensure the device being powered matches the 20V 6A specification before connecting.

Highlights

  • Works worldwide with 100-240V input
  • Delivers 120W continuous power for demanding devices
  • Stable 20V 6A output protects sensitive electronics
  • Built-in safeguards against short circuit and overheating
  • Includes power cord for immediate setup

Specifications

ModelGST120A20

Questions about this item

Does the GST120A20 require any periodic maintenance or component replacement?

The adapter has no user-serviceable parts; if the 20 V 6 A output fails or the input cord is damaged, the whole unit is replaced.

What limits continuous full-load operation of the 120 W output?

Internal over-temperature protection will shut the unit down before components exceed safe limits.

How much heat and noise does the GST120A20 produce when running at 120 W all day?

It uses passive convection cooling with no fan, so it runs silently; the case becomes warm but stays within design temperature.

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