Compaq 470007-802 Making Hardware Changes - Compaq Deskpro Family of Personal - Page 25

DIMMs, Memory Module Installation, DIMMs must support CAS Latency 2 or 3 CL = 2 or CL = 3.

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DIMMs The memory sockets on the Intel 810 and 810e chipset-based system boards can be populated with industry-standard DIMMs. These memory module slots are populated with at least one preinstalled memory module. To achieve the maximum memory support, you may be required to replace the preinstalled DIMM with a higher capacity DIMM. For proper system operation, the DIMMs must be industrystandard 168-pin, 100 MHz, unbuffered, PC100-compliant SDRAM DIMMs, depending on the model. The SDRAM DIMMs must support CAS Latency 2 or 3 (CL = 2 or CL = 3). They must also contain the mandatory Joint Electronic Device Engineering Council (JEDEC) Serial Presence Detect (SPD) information. DIMMs constructed with x4 SDRAM are not supported; the system will not start using unsupported DIMMs. Memory Module Installation CAUTION: Your memory module sockets have gold metal contacts. When upgrading your memory, it is important to use memory modules with gold metal contacts to prevent corrosion and/or oxidation resulting from having incompatible metals in contact with each other. CAUTION: Static electricity can damage the electronic com- ponents of the computer or optional cards. Before beginning these procedures, ensure that you are discharged of static electricity by briefly touching a grounded metal object. Refer to Appendix F, "Electrostatic Discharge," for more information. CAUTION: When handling a memory module, be careful not to touch any of the contacts. Doing so may damage the module. 1. Shut down the operating system properly, then turn off the computer and any external devices, then disconnect the power cord from the power outlet. Making Hardware Changes 2-15

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Making Hardware Changes
2-15
DIMMs
The memory sockets on the Intel 810 and 810e chipset–based
system boards can be populated with industry-standard DIMMs.
These memory module slots are populated with at least one
preinstalled memory module. To achieve the maximum memory
support, you may be required to replace the preinstalled DIMM
with a higher capacity DIMM.
For proper system operation, the DIMMs must be industry-
standard 168-pin, 100 MHz, unbuffered, PC100–compliant
SDRAM DIMMs, depending on the model. The SDRAM
DIMMs must support CAS Latency 2 or 3 (CL = 2 or CL = 3).
They must also contain the mandatory Joint Electronic Device
Engineering Council (JEDEC) Serial Presence Detect (SPD)
information. DIMMs constructed with x4 SDRAM are not
supported; the system will not start using unsupported DIMMs.
Memory Module Installation
CAUTION:
Your memory module sockets have gold metal
contacts. When upgrading your memory, it is important to use
memory modules with gold metal contacts to prevent corrosion
and/or oxidation resulting from having incompatible metals in
contact with each other.
CAUTION:
Static electricity can damage the electronic com-
ponents of the computer or optional cards. Before beginning these
procedures, ensure that you are discharged of static electricity by
briefly touching a grounded metal object. Refer to Appendix F,
“Electrostatic Discharge,” for more information.
CAUTION:
When handling a memory module, be careful not to
touch any of the contacts. Doing so may damage the module.
1. Shut down the operating system properly, then turn off the
computer and any external devices, then disconnect the
power cord from the power outlet.