Dell OptiPlex 7090 Tower Service Manual - Page 75

M.2 PCIe SSD connector, Internal USB connector

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NOTE: Before disconnecting the cables from the system board, note the location of the connectors so that you can reconnect the cables correctly after you replace the system board. 2. Remove the side cover. 3. Remove the front bezel. 4. Remove the memory module. 5. Remove the WLAN. 6. Remove the M.2 2230 SSD/M.2 2280 SSD. 7. Remove the coin-cell battery. 8. Remove the graphics card. 9. Remove the powered GPU. NOTE: This step is required only if the system is configured with powered GPU. 10. Remove the speaker. 11. Remove the intrusion switch. 12. Remove the VR heatsink. 13. Remove the processor fan and 125 W heat-sink assembly or processor fan and heat-sink assembly. 14. Remove the chassis fan. 15. Remove the processor. About this task The following image indicates the connectors on your system board. 1. CPU power connector 2. Processor fan connector 3. Memory module connector 4. Power button connector 5. Remote power switch connector 6. SD card reader connector 7. SATA0 connector (blue) 8. M.2 PCIe SSD connector 9. Internal USB connector Removing and installing components 75

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NOTE:
Before disconnecting the cables from the system board, note the location of the connectors so that you can
reconnect the cables correctly after you replace the system board.
2.
Remove the
side cover
.
3.
Remove the
front bezel
.
4.
Remove the
memory module
.
5.
Remove the
WLAN
.
6.
Remove the
M.2 2230 SSD
/
M.2 2280 SSD
.
7.
Remove the
coin-cell battery
.
8.
Remove the
graphics card
.
9.
Remove the
powered GPU
.
NOTE:
This step is required only if the system is configured with powered GPU.
10.
Remove the
speaker
.
11.
Remove the
intrusion switch
.
12.
Remove the
VR heatsink
.
13.
Remove the
processor fan and 125 W heat-sink assembly
or
processor fan and heat-sink assembly
.
14.
Remove the
chassis fan
.
15.
Remove the
processor
.
About this task
The following image indicates the connectors on your system board.
1.
CPU power connector
2.
Processor fan connector
3.
Memory module connector
4.
Power button connector
5.
Remote power switch connector
6.
SD card reader connector
7.
SATA0 connector (blue)
8.
M.2 PCIe SSD connector
9.
Internal USB connector
Removing and installing components
75