ComfortView Plus............................................................................................................................................................. 38
Using the privacy shutter................................................................................................................................................38
Dell Optimizer.....................................................................................................................................................................39
Chapter 4: Working inside your computer....................................................................................40
Safety instructions............................................................................................................................................................40
Before working inside your computer.....................................................................................................................40
Safety precautions.......................................................................................................................................................41
Electrostatic discharge—ESD protection..............................................................................................................41
ESD Field Service kit ................................................................................................................................................. 42
Transporting sensitive components........................................................................................................................43
After working inside your computer........................................................................................................................43
After working inside your computer........................................................................................................................43
BitLocker....................................................................................................................................................................... 43
Recommended tools......................................................................................................................................................... 44
Screw list.............................................................................................................................................................................44
Major components of Latitude 5550............................................................................................................................45
Chapter 5: Removing and installing Customer Replaceable Units (CRUs).................................... 48
SIM card tray......................................................................................................................................................................48
Removing the SIM card tray (optional)................................................................................................................. 48
Installing the SIM card tray (optional)....................................................................................................................49
Base cover.......................................................................................................................................................................... 50
Removing the base cover..........................................................................................................................................50
Installing the base cover............................................................................................................................................ 53
Wireless card......................................................................................................................................................................55
Removing the wireless card......................................................................................................................................55
Installing the wireless card........................................................................................................................................56
Wireless Wide Area Network (WWAN) card.............................................................................................................. 58
Removing the 4G WWAN card................................................................................................................................ 58
Installing the 4G WWAN card...................................................................................................................................59
Removing the 5G WWAN card................................................................................................................................. 61
Installing the 5G WWAN card...................................................................................................................................62
Memory module................................................................................................................................................................. 64
Removing the memory module.................................................................................................................................64
Installing the memory module...................................................................................................................................65
Solid State Drive (SSD)................................................................................................................................................... 65
Removing the M.2 2230 SSD from slot 1 (SSD1)................................................................................................65
Installing the M.2 2230 SSD in slot 1 (SSD1)........................................................................................................66
Removing the M.2 2280 SSD from slot 1 (SSD1)................................................................................................ 67
Installing the M.2 2280 SSD in slot 1 (SSD1)........................................................................................................68
Removing the M.2 2230 SSD from slot 2 (SSD2).............................................................................................. 69
Installing the M.2 2230 SSD in slot 2 (SSD2)...................................................................................................... 70
Fan......................................................................................................................................................................................... 71
Removing the fan......................................................................................................................................................... 71
Installing the fan...........................................................................................................................................................72
Chapter 6: Removing and installing Field Replaceable Units (FRUs)............................................ 74
Battery................................................................................................................................................................................. 74
4
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