Dell PowerEdge 4300 Dell PowerEdge 4300 Systems Installation and Troubleshooti - Page 97

system board, external drive, disk drive bays, SCSI backplane board

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SCSI backplane board system board tray tray latch In Figure 7-7, the cover on the right side of the computer is removed to provide an interior view. Figure 7-7 also identifies the drive bays. Refer to this illustration to locate interior features and components discussed later in this guide. The system board-the large, vertical, printed circuit board at the left side of the chassis-holds the computer's control circuitry and other electronic components. Some hardware options are installed directly on the system board. The external drive bays provide space for up to three half-height 5.25-inch drives, typically CD-ROM drives or tape drives. The diskette drive bay holds a 3.5-inch diskette drive. The harddisk drive bays provide space for up to six 1.6-inch or 1-inch SCSI hard-disk drives. These hard-disk drives are connected to a SCSI host adapter on the system board or on an expansion card via the SCSI backplane board. Checking Inside the Computer 7-9

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Checking Inside the Computer
7-9
)LJXUH±¼¶»µ±±2SHQLQJ±WKH±6\VWHP±%RDUG±7UD\
,QVLGH±WKH±&KDVVLV
In Figure 7-7, the cover on the right side of the computer is removed to provide an
interior view. Figure 7-7 also identifies the drive bays. Refer to this illustration to locate
interior features and components discussed later in this guide.
The
system board
—the large, vertical, printed circuit board at the left side of the
chassis—holds the computer’s control circuitry and other electronic components.
Some hardware options are installed directly on the system board. The
external drive
bays
provide space for up to three half-height 5.25-inch drives, typically CD-ROM
drives or tape drives. The diskette drive bay holds a 3.5-inch diskette drive. The
hard-
disk drive bays
provide space for up to six 1.6-inch or 1-inch SCSI hard-disk drives.
These hard-disk drives are connected to a SCSI host adapter on the system board or
on an expansion card via the
SCSI backplane board
.
system
board tray
SCSI backplane
board
tray
latch