NEC PowerMate VT 300i Series, Инструкция по обслуживанию и справочник

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4-8 System Board
Upgrade Sockets
The system board has the following upgrade sockets:
„
processor socket
„
DIMM sockets.
See the following paragraphs for socket descriptions.
Processor Socket
The processor Slot 1 socket is designed for easy processor upgradeability
through use of a Single Edge Contact (S.E.C.) cartridge and a universal
retention mechanism. The cartridge contains the processor, second level cache,
thermal plate, back cover, and heatsink.
The 242-pin edge connector Slot 1 socket on the system board holds the
processor cartridge. The cartridge is held in place in the socket by the universal
retention mechanism.
To remove or install a processor cartridge, see Section 3, “Disassembly and
Reassembly.”
DIMM Sockets
The system board has two, 168-pin, gold-plated DIMM sockets (locations are
shown on the figure at the beginning of this section). The sockets support up to
256 MB of high-speed SDRAM memory. The sockets support DIMM modules
in 16-, 32-, 64-, and 128-MB unbuffered non-ECC memory configurations.
The DIMM modules
„
can be installed in one or two sockets
„
size can vary between sockets
„
speed must match the processor bus speed (66 MHz or 100 MHz)
„
can be single- and double-sided.
See the following tables for supported DIMMs and for sample DIMM upgrade
paths. To determine the memory needed for a memory upgrade, see “Checking
System Memory” in this section. To remove or install a DIMM, see Section 3,
“Disassembly and Reassembly.”