1. IntroductionExpress5800/53Xi, Y53Xi User's Guide32Chapter 1 General Description1. IntroductionThank you for purchasing our NEC Express workstation.NEC’s latest technology and architectures realize high-power and high-speed operation for this workstation.Read thoroughly this document before using the workstation to fully understand handling of Express5800 Seriesworkstation and appreciate its functions to the maximum extent.