High Efficiency - Power supply - hot-plug / redundant ( plug-in module ) - 80 PLUS Platinum - AC 100-127/200-240 V - 550 Watt - for System x3550 M4 (550 Watt), 7914 (550 Watt) x3650 M4 7915 (550 Watt) x3650 M4 HD 5460

IBM/Lenovo is a global technology and innovation company, it is the largest technology and consulting employer in the world. IBM offers a wide range of technology and consulting services; a broad portfolio of middleware for collaboration, predictive analytics, software development and systems management; and the world's most advanced servers and supercomputers. Utilizing its business consulting, technology and R&D expertise, IBM helps clients become "smarter" as the planet becomes more digitally interconnected. As a global leader in the PC market, IBM develops, manufactures and markets cutting-edge, reliable, high-quality PC products and value-added professional services that provide customers around the world with smarter ways to be productive and competitive.