2
Hardware Installation
17
2.2 System Memory
Warning:
• To ensure proper boot up and operation of your system, you must
power-off the system then turn off the power supply’s switch or
unplug the AC power cord prior to altering the setting of a jumper
or replacing the CPU.
• Electrostatic discharge (ESD) can damage your system board,
processor, disk drives, add-in boards, and other components. Per-
form the upgrade instruction procedures described at an ESD
workstation only. If such a station is not available, you can provide
some ESD protection 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.
The system board is equipped with three 184-pin DDR SDRAM
DIMM (Dual In-line Memory Module) sockets that support 2.5V
DDR SDRAM DIMM. Double Data Rate SDRAM (DDR SDRAM)
is a type of SDRAM that doubles the data rate through reading
and writing at both the rising and falling edge of each clock. This
effectively doubles the speed of operation therefore providing
two times faster data transfer.
AN37
1
DDR 1
DDR 2
DDR 3
