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System Overview 1-13
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The subsections that follow provide service-related information about the sys-
tem board and components, which are shown in Figure 1-11.
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The four DIMM sockets on the system board can accommodate combinations
of 32-, 64-, and 128-MB DIMMs up to a total memory capacity of 512 MB
using unbuffered SDRAM or up to 2048 MB using registered SDRAM DIMMs.
A minimum of 64 MB RAM is required.
There is no requirement that one socket be filled before the other, and empty
sockets can be left between installed DIMMs. However, Dell recommends
populating the sockets in consecutive order starting with DIMM A. DIMM
sockets do not have to contain DIMMs of the same size. DIMMs may be
installed in any order.
See “DIMMs” in Chapter 4 for information on removing and replacing DIMMs.
PCI expansion-card
connectors (PCI1-PCI5)
CD-ROM drive audio
interface connector (CD-IN)
serial port connectors
(SERIAL 1/2) (stacked)
parallel/SCSI port connectors
(PARALLEL/SCSI) (stacked)
secondary diskette-drive interface
connector (DISKETTE)
(pin-1 corner)
front of
computer
secondary EIDE interface
connector (IDE2) (pin-1 corner)
battery socket (BATTERY)
primary EIDE interface
connector (IDE1) (pin-1 corner)
NIC connector (ENET)
configuration jumpers
processor fan
connector (FAN)
line-out jack (LINE-OUT)
line-in jack (LINE-IN)
microphone jack (MIC-IN)
control panel
connector (PANEL)
mouse/keyboard connectors
(MOUSE/KYBD) (stacked)
main power
input connector
(POWER1)
primary Slot 2 SEC
cartridge connector (SLOT2_PRI)
DIMM sockets
(DIMM_A-DIMM_D)
secondary Slot 2 SEC
cartridge connector (SLOT2_SEC)
USB connectors (USB)
secondary SCSI connector
(SCSI_NARROW)
primary SCSI connector
(SCSI_ULTRA2)
AGP expansion-card connector (AGP)
Wakeup On LAN
card connector (LAN)
hard-disk drive access indicator
connector (AUX LED)
diskette-drive interface
connector (DISK2)
RAID connector (RAID)
ISA expansion-card connector (ISA1)
power LED
standby LED
modem connector (MODEM_IN)
SPREAD
jumper
CPU mismatch LED