Guide to Features & Upgrades
2-13
Writer: Lydia Sanchez Saved By: Lydia Sanchez Saved Date: 12/15/98 2:00 PM
Pages: 31 Words: 3829 Template: c:\msoffice\templates\comm.dot
File Name d_Ch2.doc Part Number 166811-002
Installing Additional
Memory
The computer comes with at least 64 megabytes of synchronous
dynamic random access memory (SDRAM) dual inline memory
modules (DIMMs) installed and supports up to 256 or 384 MB
of memory, depending on model. The memory sockets on the
system board can be populated with 8-, 16-, 32-, 64-, or 128-
MB DIMMs. Self-refresh DIMMs are required on models with
three DIMM sockets.
For proper system operation, the DIMMs must be industry
standard 168-pin, 66-MHz or faster unbuffered SDRAM
DIMMs. If your system processor has a bus speed of 66 MHz,
Compaq recommends that any additional DIMMs also be 66
MHz. If the system bus speed is 100 MHz, the use of 100-MHz
DIMMs is required. (Run Compaq Computer Setup to
determine your system bus speed; see the
Software Reference
Guide
for instructions.) 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.
CAUTION:
Your DIMM sockets have gold metal contacts. When
upgrading your memory, it is important to use DIMMs with gold
metal contacts (not tin-lead) 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 boards. Before beginning
these procedures, ensure that you are discharged of static
electricity by briefly touching a grounded metal object. Refer to the
Safety, Care & Regulatory Information
guide 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. Turn off the computer and any external devices, then
disconnect the power cord from the power outlet.
2. Remove the computer access panel and locate the DIMM
sockets.
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