Apple powermac g3 blue.white Service Manual

Page of 293
 
 Hot Issues
I/O Card - 4
 
I/O Card
 
Some I/O functions on the Power Macintosh G3/Macintosh 
Server G3 logic board are handled through a removable I/O 
card that must be installed for the computer to operate 
properly. 
 
SDRAM DIMMS
 
The DIMM modules used in any previous Power Macintosh or 
Power Macintosh G3 computer model are 
 
not
 
 compatible 
with the Power Macintosh G3/Macintosh Server G3 (Blue 
and White) computers described in this manual. The SDRAM 
DIMM modules for these computers 
 
must be
 
 PC-100 
compliant,168-pin, 3.3-volt, unbuffered, and rated at 125 
MHz (8 ns) or faster.