User Guide21www.nec-computers.com1 5.25-inch device bayBackup tape drives may be installed in the 5.25-inch device bay.2 Optical disc driveThe optical disc drive reads data from the inserted optical disc.(Depending on your hardware configuration, a DVD-ROM or a CD R/W drive may be installed.)2-1 Access lamp (lights in amber while being accessed)2-2 Optical disc slot2-3 Emergency hole2-4 Open/Close button3 Additional HDD cage bayThis bay allows you to install four additional disk drives in the server.4 3.5-inch hard disk drive bayThe 3.5-inch hard disk drive bay contains up to four hard disks. Hard disks having thethickness of 1 inch can be inserted into the slots.The disk slots are numbered sequentially from bottom to top. Empty trays are installed in theslots not fitted with hard disk drives.The SCSI IDs are defined as follows: ID0 to ID5 from bottom to top.5 USB connectorsThe USB connectors allow the server to connect to USB devices.6 Cover open sensorThe cover open sensor detects the open of the front door.7 Power switchThe power switch is used to turn on/off the power. If you press the switch once, then thePOWER/SLEEP lamp goes on and the power is turned on. If you press the switch again, thepower is turned off. The system is forcibly shut down when the power switch is pressedcontinuously for four seconds or longer.8 Lamps9 Reset switchThe reset switch is used to reset the server.10 Dump switch (NMI switch)Non-maskable Interrupt switch.The dump switch is used to collect the event logs having occurred in the server.