Recommended tools......................................................................................................................................................... 33
Screw list.............................................................................................................................................................................34
Major components of OptiPlex Tower Plus 7020..................................................................................................... 35
Chapter 5: Removing and installing side cover.............................................................................37
Removing the side cover................................................................................................................................................. 37
Installing the side cover................................................................................................................................................... 38
Chapter 6: Removing and installing coin-cell battery...................................................................40
Removing the coin-cell battery......................................................................................................................................40
Installing the coin-cell battery........................................................................................................................................40
Chapter 7: Removing and installing Customer Replaceable Units (CRUs).................................... 42
Front bezel .........................................................................................................................................................................42
Removing the front bezel..........................................................................................................................................42
Installing the front bezel............................................................................................................................................ 43
Memory module................................................................................................................................................................. 44
Removing the memory module.................................................................................................................................44
Installing the memory module...................................................................................................................................45
M.2 solid state drive......................................................................................................................................................... 46
M.2 2230 solid-state drive........................................................................................................................................ 46
M.2 2280 solid-state drive........................................................................................................................................ 49
External puck antenna...................................................................................................................................................... 51
Wireless card.......................................................................................................................................................................51
Removing the wireless card.......................................................................................................................................51
Installing the wireless card........................................................................................................................................ 52
Graphics Card.................................................................................................................................................................... 54
Removing the graphics card..................................................................................................................................... 54
Installing the graphics card....................................................................................................................................... 55
Removing the powered graphics card....................................................................................................................56
Installing the powered graphics card......................................................................................................................58
Media-card reader............................................................................................................................................................ 60
Removing the media-card reader............................................................................................................................ 60
Installing the media-card reader...............................................................................................................................61
Hard drive............................................................................................................................................................................63
3.5-inch hard drive......................................................................................................................................................63
Optical drive........................................................................................................................................................................72
Removing the slim optical drive............................................................................................................................... 72
Installing the slim optical drive................................................................................................................................. 75
Internal speaker..................................................................................................................................................................79
Removing the internal speaker.................................................................................................................................79
Installing the internal speaker................................................................................................................................... 79
Expansion card...................................................................................................................................................................80
Removing the network card..................................................................................................................................... 80
Installing the network card........................................................................................................................................ 81
Removing the serial/parallel port card................................................................................................................... 83
Installing the serial/parallel port card..................................................................................................................... 84
Intrusion switch................................................................................................................................................................. 86
Removing the intrusion switch.................................................................................................................................86
4
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