Professional, this is the third feeder I buy. First two times without problems, but the third was "boom" soon after the commissioning. This can happen ... Kudos to Amazon! who was able to pay me electronically speed, which allowed me to immediately order a new feeder. Given the quality of my client, I preferred cependent change for the FSP Raider 650W, mieu reinforced in terms of electrical protection. Amazon thank you.