Full Details from Amazon.com : http://www.amazon.com/gp/product/B00DC6TXVG?tag=onigi-20
320 Watt 320W Replace Power? Flex ATX Power Supply Replacement Upgrade for IBM SurePOS 500
High Quality Replace Power PSU
Use to replace your dead power supply
320 Watt for adding additional devices
Additional Connectors for great Compatibility