Removing the USB module..................................................................................................................................... 137
Installing the USB module........................................................................................................................................138
Removing the optical drive......................................................................................................................................140
Installing the optical drive.........................................................................................................................................141
Hot spare feature......................................................................................................................................................142
Removing a power supply unit blank......................................................................................................................142
Installing a power supply unit blank........................................................................................................................ 143
Removing a power supply unit................................................................................................................................143
Installing a power supply unit.................................................................................................................................. 144
Wiring instructions for a DC power supply unit.................................................................................................... 145
Removing the system board....................................................................................................................................147
Installing the system board......................................................................................................................................148
Replacing the Trusted Platform Module.................................................................................................................151
Initializing TPM for BitLocker users........................................................................................................................ 151
Initializing the TPM 1.2 for TXT users.................................................................................................................... 152
Removing the left control panel............................................................................................................................. 152
Installing the left control panel................................................................................................................................153
Removing the right control panel........................................................................................................................... 154
Installing the right control panel............................................................................................................................. 155
Running the Embedded System Diagnostics from Boot Manager.....................................................................157
Running the Embedded System Diagnostics from the Dell Lifecycle Controller.............................................. 157
System diagnostic controls..................................................................................................................................... 158
System board jumper settings...................................................................................................................................... 159
System board jumpers and connectors....................................................................................................................... 160
Disabling forgotten password........................................................................................................................................ 161
Receiving automated support with SupportAssist ....................................................................................................163
Contacting Dell............................................................................................................................................................... 163
Documentation feedback.............................................................................................................................................. 164
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Dell EMC PowerEdge R640 Installation and Service Manual
Contents