1. IntroductionExpress5800/B120f User's Guide 21Chapter 1 General Description1. IntroductionWelcome to the NEC Express5800/BladeServer series server.This high performance and high density server is powered by the latest microprocessor "Intel ® Xeon® processor.NEC’s latest technology and architectures realize more space-saving and reduction of running cost than ever.The server is designed with consideration of not only reliability but also expandability, which enables you to useit as a network server.Read this document before using the server thoroughly to fully understand handling of Express5800 SeriesServer and appreciate its functions to the maximum extent.