Adaptec SBC-599 - Manual (Page 29)

Chapter 2 Installation Guide 19
Installing DRAM (SIMMs)
The SBC-599 CPU card provides four 72-pin SIMM (Single In-
line Memory Module) sockets and supports either Fast Page
Mode (FPM) or Extended Data Output (EDO) DRAM with a
speed of 70 ns or faster. You can install up to 256 MB of RAM.
Installing SIMMs
NOTE 1: Pentium or compatible processors adopt 64 bit
data bus. Since 72-pin SIMM can only provide 32
bit data bus width, two SIMM modules are required
as one memory bank, and both SIMMs must be
the same size and type.
1. Ensure that all power sources are disconnected.
2. Slip the memory module into the socket at a 45 degree
angle.
3. Push the module toward the vertical posts at both ends of the
socket until the module is upright and the retaining clips at
both ends of the module click into place. When positioned
correctly, the pins on top of the vertical posts should
correspond to the circular holes on the ends of the module.
4. Repeat steps 2 and 3 for each module you install.
NOTE 2: Do not insert any SIMM module that contains
more than 24 memory chips. SIMMs contain
more than 24 chips exceed the driving capability
of new generation chipsets.