G486VPA
Installation Overview
u
2-3
Warning:
Electrostatic discharge (ESD) can damage your upgrade
processor, disk drives, add-in boards, and other
components. Perform the upgrade instruction
procedures described at an ESD workstation only. If
such a station is not available, you can provide some
ESD portection by wearing an antistatic wrist strap and
attaching it to a metal part of the system chassis. If a
wrist strap is unavailable, establish and maintain
contact with the system chassis throughout any
procedures requiring ESD protection.
Hardware Installation
Memory Installation
The G486VPA system board can support 1MB to
128MB of memory using HSIM modules. HSIM is an
acronym for High Density Single In-line Memory.
A SIM module consists of several RAM chips soldered
onto a small circuit board. A SIM module connects to
the system board via a 72-pin card-edge connector.
The SIM sockets are divided into four banks on the
system board. The G486VPA uses 256Kx36, 1Mx36,
4Mx36, and 16Mx36 HSIM modules installed in four
banks or 512Kx36, 2Mx36 and 8Mx36 HSIM modules
installed in two banks.
You will need 1, 2, 3 or 4 pieces of SIM modules,
depending on the amount of memory you intend to
install. The following table summarizes the bank loca-
tions and modules needed for the corresponding memory
sizes.
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