Hardware Owner's Manual (PDF)
Page 13
... can use the system identification buttons on the front and back panels blink until one of the buttons is used to troubleshoot software and device driver errors when using the end of these buttons is pushed, the blue system status indicators on the front and back panels to identify a particular... Item Component Icon 6 System status indicator 7 System identification button 8 Hard drive 1 9 Hard drive 0 10 Optical drive 11 Bezel 12 NMI button Description The blue system status indicator lights up during normal system operation. A 3.5-inch SAS or SATA hard drive. Table 1-2.
... can use the system identification buttons on the front and back panels blink until one of the buttons is used to troubleshoot software and device driver errors when using the end of these buttons is pushed, the blue system status indicators on the front and back panels to identify a particular... Item Component Icon 6 System status indicator 7 System identification button 8 Hard drive 1 9 Hard drive 0 10 Optical drive 11 Bezel 12 NMI button Description The blue system status indicator lights up during normal system operation. A 3.5-inch SAS or SATA hard drive. Table 1-2.