Cooler Master eXtreme Power Series 500W ATX form factor 12V V2.01 Power Supply - (713001700) Compliance with the newest Intel standard ATX 12V V2.01, Support dual +12V1, and +12V2 outputs for higher power usage Super silent operation with intelligent fan speed control More than 70% efficiency at typical load operation Higher reliability (MTBF ###GT!!! 100,000 hours) OVP / OPP / Short Circuit Protection