Intel AC450NX 18 CPU Baseboard: Description/Setting Configuration Jumpers, 19 Memory Modules: Description/Adding Memory, 20 Power System: Description/Calculating Power Usage, 21 Back-up Battery: Replacing/Disposing

Contents
xi
18 CPU Baseboard: Description/Setting Configuration Jumpers
Warnings and Cautions .................................................................................................... 217
CPU Baseboard Features ................................................................................................ 217
Processors............................................................................................................... 217
Memory Interface..................................................................................................... 218
DC-to-DC Voltage Converters ................................................................................. 218
I/O Interface............................................................................................................. 219
Front Side Bus......................................................................................................... 219
Front Side Bus Terminator Module.......................................................................... 219
CPU Baseboard Configuration Jumpers........................................................................... 220
Changing a Jumper Setting ..................................................................................... 221
CPU Baseboard Layout.................................................................................................... 222
CPU Baseboard Connectors ............................................................................................ 223
Memory Connectors, J23 and J20:Rows A, B, and C.............................................. 223
I/O Connector .......................................................................................................... 226
Power Connectors................................................................................................... 229
Front Panel Connector............................................................................................. 230
19 Memory Modules: Description/Adding Memory
Warnings and Cautions .................................................................................................... 233
Module Features .............................................................................................................. 233
EDO DRAM Array ............................................................................................................ 234
Memory Module Layout.................................................................................................... 239
Installing DIMMs............................................................................................................... 240
Removing DIMMs............................................................................................................. 242
System Management Interface......................................................................................... 243
Memory Module Connector .............................................................................................. 244
20 Power System: Description/Calculating Power Usage
Warnings and Cautions .................................................................................................... 249
AC Input Power ................................................................................................................ 249
Jumper JP1 Installing/Removing.............................................................................. 250
Power System.................................................................................................................. 251
Power Supply Input Voltages................................................................................... 252
Power Supply Output Voltages................................................................................ 252
Server Current Usage ...................................................................................................... 253
Calculating Power Usage ................................................................................................. 254
21 Back-up Battery: Replacing/Disposing
Warnings and Cautions .................................................................................................... 257
Tools and Supplies You Need .......................................................................................... 257
Equipment Log ........................................................................................................ 257
Back-up Battery................................................................................................................ 258
Replacing the Back-up Battery ................................................................................ 259