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Dell Latitude 5550 Owners Manual - Page 140

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7 Software This chapter details the supported operating systems along with instructions on how to install the drivers. Operating system Your Latitude 5550 supports the following operating systems: ● Windows 11 Home ● Windows 11 Pro ● Ubuntu Linux 22.04 LTS Drivers and downloads When troubleshooting, downloading, or installing drivers, it is recommended that you read the Dell Knowledge Base article Drivers and Downloads FAQs 000123347. 140 Software

Section	Page
Latitude 5550 Owner's Manual	1
Contents	3
Views of Latitude 5550	8
Right	8
Left	9
Top	10
Front	11
Back	12
Bottom	12
Service Tag	13
Battery charge and status light	13
Set up your Latitude 5550	14
Specifications of Latitude 5550	16
Dimensions and weight	16
Processor	16
Chipset	19
Operating system	20
Memory	20
External ports	21
Internal slots	21
Ethernet	21
Wireless module	22
WWAN module	22
Audio	23
Storage	24
Media-card reader	24
Keyboard	25
Keyboard function keys	25
Camera	27
Touchpad	27
Power adapter	28
Battery	29
Display	30
Fingerprint reader (optional)	31
Sensor	31
GPU—Integrated	32
GPU—Discrete	32
External display support	32
Hardware security	33
Smart-card reader	33
Contactless smart-card reader	33
Contacted smart-card reader	37
Operating and storage environment	37
Dell support policy	38
ComfortView Plus	38
Using the privacy shutter	38
Dell Optimizer	39
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
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
Removing and installing Field Replaceable Units (FRUs)	74
Battery	74
Rechargeable Li-ion battery precautions	74
Removing the battery	74
Installing the battery	76
Assembly-inner frame	77
Removing the assembly-inner frame	77
Installing the assembly-inner frame	79
Touchpad	81
Removing the touchpad	81
Installing the touchpad	82
Speakers	83
Removing the speakers	83
Installing the speakers	84
Coin-cell battery	86
Removing the coin-cell battery	86
Installing the coin-cell battery	86
Heat sink	87
Removing the heat sink (Discrete GPU)	87
Installing the heat sink (Discrete GPU)	88
Removing the heat sink (Integrated GPU)	89
Installing the heat sink (Integrated GPU)	90
System board	91
Removing the system board	91
Installing the system board	95
Power button	98
Removing the power button	98
Installing the power button	99
Power button with optional fingerprint reader	100
Removing the power button with an optional fingerprint reader	100
Installing the power button with an optional fingerprint reader	101
Keyboard	102
Removing the keyboard	102
Installing the keyboard	104
Display assembly	106
Removing the display assembly	106
Installing the display assembly	109
Display bezel	112
Removing the display bezel	112
Installing the display bezel	113
Display panel	114
Removing the display panel	114
Installing the display panel	117
Camera module	120
Removing the camera module	120
Installing the camera module	121
Display hinges	123
Removing the display hinges	123
Installing the display hinges	123
Display back cover	124
Removing the display back cover	124
Installing the display back cover	125
Display cable	126
Removing the display cable	126
Installing the display cable	127
Sensor board	128
Removing the sensor board	128
Installing the sensor board	129
Fingerprint reader (optional)	130
Removing the fingerprint reader (optional)	130
Installing the fingerprint reader (optional)	131
Smart-card reader	133
Removing the smart-card reader	133
Installing the smart-card reader	133
Dummy SIM-card slot filler	134
Removing the dummy SIM-card slot filler	134
Installing the dummy SIM-card slot filler	135
Palm-rest assembly	136
Removing the palm-rest assembly	136
Installing the palm-rest assembly	138
Software	140
Operating system	140
Drivers and downloads	140
BIOS Setup	141
Entering BIOS setup program	141
Navigation keys	141
F12 One Time Boot menu	141
View Advanced Setup options	142
View Service options	142
System Setup options	142
Updating the BIOS	163
Updating the BIOS in Windows	163
Updating the BIOS in Linux and Ubuntu	164
Updating the BIOS using the USB drive in Windows	164
Updating the BIOS from the F12 One-Time boot menu	164
System and setup password	165
Assigning a System Setup password	165
Deleting or changing an existing system setup password	166
Clearing CMOS settings	166
Clearing BIOS (System Setup) and System passwords	166
Troubleshooting	167
Handling swollen rechargeable Li-ion batteries	167
Locate the Service Tag or Express Service Code of your Dell computer	167
Dell SupportAssist Pre-boot System Performance Check diagnostics	168
Running the SupportAssist Pre-Boot System Performance Check	168
Built-in self-test (BIST)	168
M-BIST	168
LCD Power rail test (L-BIST)	169
LCD Built-in Self-Test (BIST)	169
System-diagnostic lights	170
Recovering the operating system	171
Real-Time Clock (RTC Reset)	171
Backup media and recovery options	172
Wi-Fi power cycle	172
Drain residual flea power (perform hard reset)	172