Seasonic SS250-SU Flex-ATX Power Supply - 250 W

Flex-ATX Power Supply - 250 W

250-watt Flex ATX power supply with fan. Ideal for use as a replacement power supply for Flex-ATX powered Mini-ITX cases or for use as the main power unit for the SL1UR-B Rackmount Case.
  • 250-watts
  • Flex-ATX form factor
  • 1U Rackmount Compatible


In Stock
  • 10+
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  • 100+


The SS250-SU is a 250-watt Flex ATX power supply with an 80+ efficiency rating. It is great for use as a replacement unit for Casetronic rackmount cases or for use in the MK100 and MK150 rackmount cases.

Power cable harness includes the following connectors: 24-pin ATX (with removable 4-pin block), 2x SATA power (1x is right-angled), 2x Molex, 1x Berg, and 1x P4 power.

Power Ratings
Output Voltage (V) 5 VSB +3.3 V +5 V +12 V -12 V
Output Current (A) 2.0 14.0 17.0 14.0 0.8
Output Power (W) 10.0 46.2 85.0 168.0 9.6

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Technical Specs

Power Output 250 W
Input Voltage 100~240 V
Dimensions (WxHxD) 150.0 x 40.5 x 81.5 mm
5.9" x 1.6" x 3.2"
Included Accessories Power cord
Cable harness