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Compact SFX power supply unit with matte metal casing and 92mm fan grille

Silverstone Technology

SilverStone Technology ST30SF-V2 300W SFX server power supply

SKU CH-5YF9-P6F41

A 300 W SFX server power supply with 80 Plus Bronze efficiency and a silent 92 mm fan, plus an ATX mounting bracket included

  • Product typeProprietary Power Supply
  • 80 Plus Bronze certified efficiency saves energy at 82% to 85% load
  • 300W continuous output rated for 24/7 operation at 40°C ambient
  • SFX form factor with included ATX mounting bracket fits diverse chassis
  • 92mm silent fan revision 2.0 keeps noise low under load
  • Single +12V rail design delivers stable power to components

Compact SFX power supply

The SilverStone Technology ST30SF-V2 is a 300W SFX power supply built for small-form-factor desktops and servers. It delivers continuous output at 40? and includes an ATX mounting bracket so the unit fits both SFX and standard ATX chassis. The 80 Plus Bronze rating confirms 82% to 85% efficiency across 20% to 100% load. A single +12V rail and a 92mm fan complete the design.

Ideal for space-constrained builds

System builders who need a reliable 300W unit in an SFX footprint will appreciate the included ATX adapter and 24/7 rating. The Bronze efficiency keeps heat low in tight cases. Buyers who want more storage or builders who need a second card should look at higher-wattage designs. The proprietary connector layout also limits use in some OEM servers.

Straightforward installation

The bundled ATX bracket lets you mount the supply in minutes using standard case screws. Connect the fixed cables to the motherboard and drives, then route the 92mm fan toward the case vent. The most common issue is cable length falling short in larger ATX towers, so measure the run before you start. No software or firmware setup is required.

How it compares

Measured against everything we stock in Server & Hot-Plug PSUs, at today’s prices. Recalculated every night.

Price $81.99
Cheaper than about 76% of the 3,798 comparable items (median $131.99).

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Specifications

Product
Product typeProprietary Power Supply

Questions about this item

Will this SFX power supply fit inside my ATX case without extra parts?

The box includes a mounting bracket that converts the SFX chassis to the ATX pattern so the unit can be secured in a standard ATX case.

Can I keep my existing motherboard if it only has a 20-pin main connector and a 4-pin CPU plug?

The unit provides a 20+4-pin ATX connector and a 4+4-pin EPS connector, so both older 20-pin boards and newer 24-pin boards are supported.

How do I know the fan is running in its quiet V2.0 mode after I power on the system?

The 92 mm fan spins at low speed under normal load; you should hear only a faint airflow sound rather than a noticeable whine.

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