Replacing the optional internal USB memory key................................................................................................. 151
Control panel assembly...................................................................................................................................................151
Removing the control panel assembly....................................................................................................................151
Installing the control panel assembly......................................................................................................................153
Trusted Platform Module...............................................................................................................................................154
Upgrading the Trusted Platform Module...............................................................................................................154
Initializing TPM for BitLocker users....................................................................................................................... 155
Initializing the TPM 1.2 for TXT users....................................................................................................................155
System board..................................................................................................................................................................156
Removing the system board................................................................................................................................... 156
Installing the system board......................................................................................................................................158
Power interposer boards............................................................................................................................................... 160
Main and GPU power interposer boards connectors...........................................................................................160
Removing the GPU power interposer board..........................................................................................................161
Installing the GPU power interposer board........................................................................................................... 162
Removing the main power interposer board.........................................................................................................162
Installing the main power interposer board........................................................................................................... 163
Converting the system from tower mode to rack mode...........................................................................................164
Converting the system from tower mode to rack mode ....................................................................................164
6 Using system diagnostics........................................................................................................................... 166
Dell Embedded System Diagnostics.............................................................................................................................166
Running the Embedded System Diagnostics from Boot Manager.....................................................................166
Running the Embedded System Diagnostics from the Dell Lifecycle Controller..............................................166
System diagnostic controls......................................................................................................................................167
7 Getting help................................................................................................................................................168
Contacting Dell EMC..................................................................................................................................................... 168
Documentation feedback.............................................................................................................................................. 168
Accessing system information by using QRL..............................................................................................................168
Quick Resource Locator for PowerEdge T640.....................................................................................................169
Receiving automated support with SupportAssist ....................................................................................................169
Recycling or End-of-Life service information..............................................................................................................169
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