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Rectangular metal ATX power supply unit, matte grey finish, cooling fan visible on rear

Bestec Power Electronics

Bestec Power Electronics ATX-300-12E 300W power supply

SKU CH-TEZW-7EA30 MPN ATX-300-12E

A 300 W ATX power supply weighing 2.7 kg, revision D1R with part number 6506087R

  • Product typeATX
  • Product weight2.7
  • Delivers 300 W for stable desktop operation
  • ATX form factor fits standard chassis
  • Weighs 2.7 kg for solid build quality
  • Part number 6506087R identifies exact replacement

Standard ATX form factor for desktop builds

This Bestec ATX-300-12E Rev. D1R unit delivers 300W of power in the standard ATX form factor. It carries part number 6506087R and weighs 2.7 kg. The supply suits office desktops or basic home systems that require a direct replacement for an original Gateway unit.

Straightforward swap for compatible chassis

Installation follows the usual ATX mounting pattern and connector layout, so most builders can fit it with basic tools. Verify that your case accepts a 2.7 kg unit and that the cable lengths reach your motherboard and drives; proprietary pin-outs on some OEM boards can prevent a clean swap.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $28.99
Cheaper than about 95% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Brand nameBestec
Model nameATX-300-12E
Product typeATX

Questions about this item

How do I confirm the Bestec ATX-300-12E Rev. D1R 300W Gateway Power Supply P/N 6506087R is working after installation?

The system powers on, the PSU fan spins, and the motherboard receives stable 300W ATX power without shutdowns or voltage warnings.

What is included with the Bestec ATX-300-12E Rev. D1R 300W Gateway Power Supply P/N 6506087R and what must I source separately?

The unit itself (2.7 kg) and its fixed ATX output cables are included; any mounting screws, cable extensions or specialised adapters are not supplied.

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