81Y6558 is Lenovo 81Y6558 power supply unit 465 W.

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.