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Chapter 2 Installation 17
Installing SDRAM (DIMMs)
System Memory
The upper edge of the SBC-658 contains one sockets for 168 pins
dual inline memory module (DIMM). The socket uses 3.3 V
unbuffered synchronous (SDRAM). DIMM is available in capaci-
ties of 16, 32, 64, 128, or 256 MB. The socket can be filled in the
DIMM of any size, giving your SBC-658 single board computer
between 16 and 256 MB of memory.
Supplementary information about DIMM
The SBC-658 can only accept PC-100 SDRAM DIMM Module.
Single-sided modules are typically 16 or 128 MB; double-sided
modules are usually 32 or 256 MB.
Memory Installation Procedures
To install DIMM, first make sure the two handles of the DIMM
socket are in the "open" position. i.e. The handles remain outward.
Slowly slide the DIMM module along the plastic guides on both
ends of the socket. Then press the DIMM module right down into
the socket, until you hear a click. This is when the two handles
have automatically locked the memory module into the correct
position of the DIMM socket. (See Figure below) To take away the
memory module, just push both handles outward, and the memory
module will be ejected by the mechanism in the socket.