Dell OptiPlex G1, Service Manual

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1-14 Dell OptiPlex G1 Managed PC Systems Service Manual
The mini tower riser board includes the P1 connector (for connecting the NIC
to the riser board cable) and an LED. If the LED is on, the riser board is receiv-
ing power; if off, the riser board is not receiving power.
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The system board can accommodate the following system upgrades:
‡
Microprocessor upgrade
‡
Main memory expansion
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Video memory expansion
These upgrades are summarized in the following subsections, and installation
procedures are provided for the various chassis configurations in Chapters 4, 5,
and 6.
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The microprocessor and secondary L2 cache memory are implemented in an
SEC cartridge/heat sink assembly. Upgrade to a higher-performance micro-
processor is accomplished by snapping out the old assembly and installing an
upgrade assembly as higher-performance microprocessors become available.
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The two DIMM sockets on the system board can accommodate combinations
of 32-, 64-, and 128-MB, 64-bit nonparity DIMMs, up to a total memory capac-
ity of 256 MB.
ISA4
ISA1
HDLED
connector
P1 connector
PCI1
PCI5
ISA2
PCI2
PCI3
ISA3
LED
PCI4