Network daughter card
.....................................................................................................................................................
136
Removing the NDC
......................................................................................................................................................
136
Installing the NDC
.........................................................................................................................................................
137
Storage controller card
......................................................................................................................................................
138
Removing the storage controller card
.......................................................................................................................
138
Installing the storage controller card
.........................................................................................................................
139
Optional IDSDM or vFlash module
...................................................................................................................................
140
Removing the MicroSD card
......................................................................................................................................
140
Installing the MicroSD card
..........................................................................................................................................
141
Optional IDSDM or vFlash module
...................................................................................................................................
142
Removing the optional IDSDM module
......................................................................................................................
142
Installing optional IDSDM module
...............................................................................................................................
143
Power supply unit
...............................................................................................................................................................
144
Hot spare feature
.........................................................................................................................................................
144
Removing a power supply unit blank
.........................................................................................................................
144
Installing a power supply unit blank
............................................................................................................................
145
Removing a power supply unit
...................................................................................................................................
145
Installing a power supply unit
......................................................................................................................................
146
Wiring instructions for a DC power supply unit
........................................................................................................
147
NVDIMM-N battery
...........................................................................................................................................................
148
Removing the NVDIMM-N battery
............................................................................................................................
148
Installing NVDIMM-N battery
.....................................................................................................................................
149
NVDIMM battery cable routing
...................................................................................................................................
151
System battery
....................................................................................................................................................................
151
Replacing system battery
............................................................................................................................................
151
Optional internal USB memory key
..................................................................................................................................
152
Replacing the optional internal USB memory key
....................................................................................................
152
System board
.....................................................................................................................................................................
153
Removing the system board
.......................................................................................................................................
153
Installing the system board
.........................................................................................................................................
154
Trusted Platform Module
..................................................................................................................................................
156
Upgrading the Trusted Platform Module
..................................................................................................................
156
Initializing TPM for BitLocker users
...........................................................................................................................
158
Initializing the TPM 1.2 for TXT users
........................................................................................................................
158
Initializing the TPM 2.0 for TXT users
.......................................................................................................................
158
Control panel
......................................................................................................................................................................
158
Removing the right control panel
...............................................................................................................................
158
Installing the right control panel
.................................................................................................................................
159
Removing the left control panel
.................................................................................................................................
160
Installing the left control panel
....................................................................................................................................
161
Chapter 7: System diagnostics
......................................................................................................
163
Dell Embedded System Diagnostics
................................................................................................................................
163
Running the Embedded System Diagnostics from Boot Manager
........................................................................
163
Running the Embedded System Diagnostics from the Dell Lifecycle Controller
.................................................
163
System diagnostic controls
.........................................................................................................................................
164
Chapter 8: PowerEdge R940 Jumpers and connectors
...................................................................
165
System board jumpers and connectors
..........................................................................................................................
165
6
Contents