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4. Using the Notebook PC
System Memory Expansion
Under some circumstances, you may find additional memory is required. This is particularly true as
applications become more complex. Expanding system memory is one method of increasing system
performance by decreasing hard disk access. The Notebook PC comes with 64MB 64-bit high speed
SDRAM built-in. One standard 144-pin SO-DIMM (Small Outline Dual Inline Memory Module) socket
is available for system memory expansion using common 3.3 Volt 100MHz SDRAM SO-DIMM
modules. Currently, SO-DIMM memory sizes are available in 16MB, 32MB, 64MB, or 128MB for
each module. The maximum memory size you can expand the Notebook PC to is 192MB using a
128MB SO-DIMM. The BIOS automatically detects the amount of memory in the system and config-
ure CMOS accordingly during the POST (Power-On-Self-Test) process. There is no hardware or soft-
ware (including BIOS) setup required after the memory is installed. Only purchase expansion modules
from your authorized retailer to ensure compatibility and reliability. The memory module must be
installed by a certified Notebook PC technician.
CAUTION! This Notebook PC does not support EDO DRAM.
Processor Upgrades
Visit your authorized service center or retailer for upgrades. The Notebook PC uses an Intel
®
micro-
PGA2 socket in order to support future processor upgrades. Faster processors are being developed
every day.
Thermal Power Control
There are three power control methods for controlling the Notebook PC’s thermal state. These power
control cannot be configured by the user and should be known in case the Notebook PC should enter
these states. The following temperatures represent the chassis temperature (not CPU).
• The fan turns ON for active cooling when temperatures are close to the safe upper limit when AC
power is used and turn ON at the safe upper limit when only using battery power.
• The processor throttles (decrease CPU speed) for passive cooling when temperature exceeds the safe
upper limit.
• The system shut down for critical cooling when temperature exceeds the maximum safe upper limit.
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