American Megatrends MegaPlex II, System Manual

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Megaplex Quad Pentium II Xeon PCI ISA System Guide 22
Step 4 Install Memory,
Continued
Installing DIMMs The Series 777 Memory Card and Series 769 have 16 x 72 DIMM sockets.
These sockets can be filled with either 2 M x 72, 4 M x 72, 8 M x 72, 16 M x 72,
or 32 M x 72 DIMMs.
Place the Memory Card on an anti-static mat. Each DIMM socket has a latch on
either end. You cannot open all the latches at one time, so open one column at a
time, install a DIMM, and then open the second column. With the component
side of the DIMM facing you, insert the DIMM into the socket and secure the
latches on either end of the DIMM, as shown below:
Populate the CPU board the same way. If you do not use the memory card,
populate only the CPU board.
50 ns DRAM If using 50 ns DRAM, you must set the following jumpers on both the Series
769 CPU board, and the Series 777 memory board:
Board Jumper
769 CPU Board J8 Select DRAM Speed. J8 is a two-pin berg.
Short 50 ns EDO DRAM
OPEN 60 ns EDO DRAM (factory setting)
777 Memory board J2 Select DRAM Speed. J2 is a two-pin berg
Short 50 ns EDO DRAM
OPEN 60 ns EDO DRAM (factory setting)
Cont’d