User's Manual

Installation Hardware Accessories
42 SPARC/CPU−56T
2. Carefully remove I/O board from CPU board by unplugging it from PMC
connectors
Finish
Changing Signaling Level
Start
1. Remove screw which fixes the voltage key to IO board
Voltage Key
Screw
2. Remove voltage key
3. Place voltage key into hole which corresponds to desired signalling level
5V
3.3V
Note:aThe signaling levels of PMC slots 3 and 4 must be equal. Otherwise they are
automatically set to 3.3V.
a