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Silver rectangular 1U Flex ATX server power supply with single fan grille and 20+4 pin connector visible

iStarUSA Inc.

iStarUSA Inc. TC-1U30FX8 1U Flex ATX 300W server power supply

SKU CH-YFAY-5VDWA MPN TC-1U30FX8

Delivers 300W in a 1U Flex ATX form factor with 80 Plus Bronze efficiency and active PFC

  • Max wattage300 W
  • Power supply redundancySingle
  • Main power connector20+4Pin
  • Output current+3.3 V@16A, +5 V@18A, +12V1@15A, +12 V@15A
  • Fan configuration1
  • Built-in protectionOutput Over Voltage Protection Short Circuit Protection Over
  • Delivers 300W continuous power for 1U rack servers
  • 80 Plus Bronze certification cuts energy waste at 80% typical efficiency
  • Active PFC meets EN61000-3-2 for cleaner mains current
  • Triple protection guards against over-voltage, short-circuit and over-current
  • Thermal fan control keeps acoustics low under varying loads

1U Flex ATX server power supply

The iStarUSA TC-1U30FX8 is a 300W single-unit power supply built to the Flex ATX and ATX12V standards. It fits a 1U rackmount chassis and delivers 80 Plus Bronze efficiency with active power factor correction meeting EN61000-3-2.

Suited for compact rack builds needing 300W

This unit suits administrators assembling 1U servers or workstations that require a 20+4 pin main connector, one 4+4 pin 12V connector, three Molex and one floppy lead. Builds demanding redundant power, higher wattage or different connector counts should look elsewhere.

Verify chassis depth and connector needs

Confirm the 3.20" x 1.60" x 5.90" enclosure clears your 1U chassis and that the provided cable set matches your motherboard and drive requirements. The supply includes thermal fan speed control and holds RoHS compliance.

How it compares

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

Price $77.99
Cheaper than about 78% of the 3,798 comparable items (median $131.99).
Max wattage 300 W
Lower than about 80% of the 235 comparable items (median 668 W).

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Specifications

Product
Brand nameiStarUSA
Model nameTC-1U30FX8
Product typeFlex ATX / ATX12 V
Power
Max wattage300 W
Power supply redundancySingle
Main power connector20+4Pin
Output current+3.3 V@16A, +5 V@18A, +12V1@15A, +12 V@15A
Built-in protectionOutput Over Voltage Protection
Short Circuit Protection
Over Current Protection
Size & build
Product dimensions3.2 in × 1.6 in × 5.9 in
Shipping weight1.07 kg
Package size226 × 183 × 69 mm
More details
Fan configuration1

Questions about this item

What motherboard power connector does the 20+4Pin main connector on this unit mate with?

The 20+4Pin main connector fits any ATX12V motherboard socket that accepts a 20-pin or 24-pin plug, so it works with both older 20-pin boards and current 24-pin designs.

Will the single 4+4Pin 12V connector power a legacy CPU that only has a 4-pin 12V socket?

Yes, the 4+4Pin 12V connector splits into two 4-pin halves; one half plugs directly into a 4-pin CPU power header while the other half can be left unconnected.

After installation, how can I confirm the 80% efficiency rating is being met?

Measure AC input power and total DC output power under typical load; if the DC output divided by AC input is at or above 80%, the unit is operating within its rated efficiency.

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