1. Installing Internal Optional DevicesExpress5800/T120h User’s Guide46Chapter 2 Preparations1.2 Overview of Installation and RemovalInstall/remove components by using the following procedure.CAUTIONBe sure to observe the following precautions to use the server safely. Failure to observe theprecautions may cause burns, injury, and property damage. For details, see Safety Precautionsand Regulatory Notices. Do not drop the server Do not leave the server pulled out of the rack Replace the cover after installing components Beware of high temperatures Do not get your fingers caught when installing componentsRemove front bezel if it is installed.See Chapter 2 (1.4 Removing Front Bezel).Turn off the server.See Chapter 3 (6. Turning Off the Server).Disconnect the power cord from the outlet and the server.Important After disconnecting the power cord from the server, wait for at least 30seconds before installing/removing optional devices. Make sure AC POWER LED on power supply unit is unlit.If only installing a hard disk drive, proceed to step 10. If only installing a power supply unit, proceedto step 11. When installing or removing other internal options, remove from the rack from the maindevice, and place it on a sturdy, flat desk.See Chapter 2 (2.1 Installation).Important Do not leave the server being pulled out from the rack.Remove side cover.See Chapter 2 (1.5 Removing Side Cover).Depending on the components to be installed or removed, follow the procedure in order.See Chapter 2 (1.6 TPM Kit) to (1.23 Use of Internal Hard Disk Drives in the RAID System).Attach side cover.See Chapter 2 (1.24 Installing Side Cover).
