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Compact Flex ATX power supply unit with metal casing and rear fan grille

FSP

FSP FSP500-50FDB Flex ATX 500W power supply

SKU CH-4AW4-PSJ6P

Flex ATX unit delivers 500 W with 90 % efficiency in a 150 mm non-modular design

  • Max wattage500 W
  • Modular cablingNon-Modular
  • Fan configuration1
  • PSU length limit150 mm
  • Product typeATX
  • 90 % efficiency meets 80 Plus Gold standard
  • 500 W continuous power for demanding workloads
  • 150 mm length fits compact Flex ATX cases
  • 100 % burn-in at 50 °C ensures reliability
  • Certified to UL 62368 and EN 61000-3-2

Compact Flex ATX power supply

The FSP FSP500-50FDB delivers 500 W in a 150 mm Flex ATX form factor suited to small chassis and industrial enclosures. Its non-modular design keeps cabling simple for builds where every millimetre counts.

90 % efficiency and quiet cooling

The unit meets the 80Plus Gold standard with 90 % efficiency across a full-range AC input. A single 4 cm fan provides airflow while maintaining low noise, and the supply has passed 100 % burn-in at 50 °C with an MTBF of 100K hours.

Safety certifications and industrial readiness

Compliance with EN61000-3-2 and UL-62368 confirms the unit meets international EMC and safety requirements. Active PFC and high-load components make it suitable for server, workstation and automation deployments.

How it compares

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

Price $118.99
Cheaper than about 59% of the 10,869 comparable items (median $142.99).
Max wattage 500 W
Lower than about 84% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameFSP Group
Product typeATX
Power
Max wattage500 W
Modular cablingNon-Modular
Compatibility
PSU length limit150 mm
More details
Fan configuration1

Questions about this item

Does the Flex ATX 500 W unit meet the 80 Plus Gold efficiency level?

The supplier states it reaches 90 % efficiency, which meets the 80 Plus Gold standard.

Will the 150 mm length fit my Mini-ITX chassis?

The power supply is 150 mm long, so it fits any case that accepts a standard Flex ATX unit of that length.

How do I connect the cables on this non-modular model?

All cables are permanently attached; route each fixed lead to the motherboard, CPU, GPU and drives, then secure the unit with the four mounting screws.

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