Internal USB memory key (optional)............................................................................................................................185
Replacing optional internal USB memory key....................................................................................................... 186
Power supply units......................................................................................................................................................... 186
Hot spare feature......................................................................................................................................................187
Removing a power supply unit blank......................................................................................................................187
Installing a power supply unit blank........................................................................................................................188
Removing a power supply unit................................................................................................................................188
Installing a power supply unit.................................................................................................................................. 189
Wiring instructions for a DC power supply unit....................................................................................................190
System board..................................................................................................................................................................192
Removing system board.......................................................................................................................................... 192
Installing system board.............................................................................................................................................193
Trusted Platform Module...............................................................................................................................................196
Replacing the Trusted Platform Module................................................................................................................196
Initializing TPM for BitLocker users........................................................................................................................197
Initializing the TPM 1.2 for TXT users.................................................................................................................... 197
Initializing the TPM 2.0 for TXT users....................................................................................................................197
Control panel................................................................................................................................................................... 197
Removing the left control panel............................................................................................................................. 198
Installing the left control panel................................................................................................................................198
Removing the right control panel...........................................................................................................................199
Installing the right control panel.............................................................................................................................200
7 Using system diagnostics...........................................................................................................................202
Dell Embedded System Diagnostics............................................................................................................................ 202
Running the Embedded System Diagnostics from Boot Manager....................................................................202
Running the Embedded System Diagnostics from the Dell Lifecycle Controller............................................. 202
System diagnostic controls.....................................................................................................................................203
8 Jumpers and connectors ...........................................................................................................................204
System board jumpers and connectors...................................................................................................................... 205
System board jumper settings......................................................................................................................................207
Disabling forgotten password....................................................................................................................................... 207
9 Getting help...............................................................................................................................................209
Contacting Dell...............................................................................................................................................................209
Documentation feedback..............................................................................................................................................209
Accessing system information by using QRL............................................................................................................. 209
Quick Resource Locator for PowerEdge R740 and R740xd systems................................................................210
Receiving automated support with SupportAssist ....................................................................................................210
Contents
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