Preface Chapter 3 Maintenance and Component Installation 3.1 Removing Power.................................................................................................................24 3.2 Accessing the System........................................................................................................25 3.3 Chassis Components..........................................................................................................26 Storage Drives...................................................................................................................26 Drive Indicators .............................................................................................................26 Installing the Internal Drives...........................................................................................27 Configuring the 5.25" Drive Bays......................................................................................30 Additional Storage Drives in a Mobile Rack..................................................................33 Installing Expansion Cards................................................................................................35 System Cooling..................................................................................................................36 Chassis Fans..................................................................................................................36 Air Shroud......................................................................................................................37 Power Supply.....................................................................................................................38 Power Supply LEDs.......................................................................................................38 Removing the Front Bezel.................................................................................................39 Appendix A Power Supply Specifications Appendix B Standardized Warning Statements for AC Systems Appendix C BPN-SAS-743TQ Backplane Specifications Appendix D BPN-SAS3-743A Backplane Specifications 5