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Rectangular ATX power supply unit in matte black finish

KHACHIMO

KHACHIMO HSP300-S12A 300W ATX power supply

SKU CH-JHFQ-1CPQM

A new 300W ATX switching power supply, factory tested, first listed in March 2024

  • Product typeATX
  • 300W output powers standard desktop builds
  • ATX form factor fits common chassis
  • Tested working before shipment
  • Quality components support stable operation
  • First listed by manufacturer March 14 2024

Ready-to-install ATX power supply

The KHACHIMO HSP300-S12A is a 300W ATX power supply built for standard desktop chassis. It suits system builders assembling office workstations or basic home PCs that do not require high-output rails. Each unit is test working before it leaves the factory.

Standard ATX mounting and connectors

The supply follows the ATX form factor so it fits regular case cut-outs and screw patterns. Its fixed cable set provides the usual motherboard and peripheral plugs for a straightforward build. Good quality components are used throughout to support reliable daily operation.

300-watt output ceiling

The 300W rating sets a firm limit on the total power available to the system. Configurations with discrete graphics cards or multiple drives may exceed this budget. Buyers planning higher-load hardware should verify their component draw before choosing this model.

How it compares

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

Price $249.99
Pricier than about 72% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeATX

Questions about this item

What ATX standard does the HSP300-S12A follow, and what power limit does that enforce?

The unit is an ATX type supply rated at 300 W, so the ATX form factor caps its continuous output at 300 watts.

What physical clearance does the ATX form factor require in a case?

As an ATX power supply it needs a standard ATX mounting cutout and the depth clearance that matches the case's ATX bay.

How is the HSP300-S12A installed, and which wiring step is most often missed?

Mount the supply with four screws in the ATX bay, then connect the 24-pin motherboard cable and the CPU power cable; the CPU power lead is the one builders most often forget.

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