Advantech PCA-6277-B, Manual

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Chapter 1 Hardware Configuration
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1.9 Memory Installation Procedures
To install DIMMs, first make sure the two handles of the DIMM
socket are in the "open" position. i.e. The handles lean 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. To remove the memory module, just push both
handles outward, and the memory module will be ejected by the
mechanism in the socket.
1.10 Cache Memory
Since the second level (L2) cache has been embedded into the Intel ®
Pentium ® III processor, you do not have to take care of either SRAM
chips or SRAM modules. The built-in second level cache in the
Pentium
® III processor yields much higher performance than the
external cache memories. The cache size in the Intel ® Pentium ® III
processor is 256/512 KB.