8 ContentsRemoving a Processor . . . . . . . . . . . . . . 226Installing a Processor. . . . . . . . . . . . . . . 239FlexMem Bridge (PowerEdge M910 Only) . . . . 241HT Bridge Card (PowerEdge M905 Only) . . . . . 242Blade System Board NVRAM Backup Battery . . . . . 245Hard Drives . . . . . . . . . . . . . . . . . . . . . . . 247Hard Drive Installation Guidelines . . . . . . . . 247Installing a Hard Drive . . . . . . . . . . . . . . 247Removing a Hard Drive . . . . . . . . . . . . . . 248Configuring the Boot Drive . . . . . . . . . . . . 249Removing a Hard Drive From a Hard-Drive Carrier 249Installing a Hard Drive in a Drive Carrier . . . . . 249Video Controller (PowerEdge M905, M805,M605, and M600 Only) . . . . . . . . . . . . . . . . . 251Hard-Drive Backplane . . . . . . . . . . . . . . . . . 253Blade System Board . . . . . . . . . . . . . . . . . . 255Removing the System Board . . . . . . . . . . . 255Installing the System Board. . . . . . . . . . . . 258Storage Controller Card . . . . . . . . . . . . . . . . 259Removing the Storage Controller Board . . . . . 259Installing the Storage Controller Board . . . . . 260Midplane Interface Card (PowerEdge M610x) . . . . 261Removing the Midplane Interface Card . . . . . 261Installing the Midplane Interface Card . . . . . . 2634 Installing Enclosure Components . . . . . 265Power Supply Modules . . . . . . . . . . . . . . . . 265System Power Guidelines. . . . . . . . . . . . . 265