1. Installing Internal Optional DevicesExpress5800/T110f-S User’s Guide 45Chapter 2 Preparations1. Installing Internal Optional DevicesThis chapter describes the instructions for installing supported optional devices and precautions.If you did not purchase any optional device requiring installation, you may skip this section.Important • We recommend that optional devices be installed by a maintenanceservice staff from your maintenance service company, who hasspecialized knowledge of this server.• Use only the devices and cables specified by NEC. You will be charged torepair damages, malfunctions, and failures caused by the use of anydevices or cables not specified for use with this server even within thewarranty period.1.1 Safety PrecautionsBe sure to observe the following precautions to install and remove optional devices properly and safely.WARNINGBe sure to observe the following precautions to use the server safety. Failureto observe the precautions may cause death or serious injury. For details, referto Safety precautions in Precautions for Use.• Do not disassemble, repair, or modify the server.• Do not remove the lithium, NiMH, or Li-ion battery.• Do not handle the server while the power plug is inserted into the outlet.CAUTIONBe sure to observe the following precautions to use of the server safely. Failureto observe the precautions may cause burns, injury, and property damage. Fordetails, refer to Safety precautions in Precautions for Use.• Do not attempt to lift the server by gripping the front bezel or vent holescover.• Make sure to complete installation.• Do not get your fingers caught.• High temperature.