Dell Latitude 7455: руководство по обслуживанию

Dimensions and weight

The following table lists the height, width, depth, and weight of your Latitude 7455.

Table 1. Dimensions and weight
The following table provides the detailed display specifications of Latitude 7455.
Description		Values
Height:
	Front height	14.69 mm (0.58 in.)
	Rear height	15.64 mm (0.62 in.)
	Maximum height	16.90 mm (0.67 in.)
Width		314 mm (12.36 in.)
Depth		223.75 mm (8.81 in.)
Weight NOTE:The weight of your computer depends on the configuration that is offered.		1.44 kg (3.17 lb)

Processor

The following table lists the details of the processors that are supported for your Latitude 7455.

Table 1. Processor
The following table provides the various processor options that are supported for Latitude 7455.
Description		Option one	Option two
Processor type		Qualcomm Snapdragon X Plus X1P-64-100	Qualcomm Snapdragon X Elite X1E-80-100
Processor wattage		15 W	15 W
Processor total core count		10	12
Performance-cores		6	8
Efficient-cores		4	4
Processor total thread count		10	12
Processor speed		Up to 3.4 GHz	Dual boost up to 4.0 GHz
Frequency—Performance cores
	Processor base frequency	3.4 GHz	3.4 GHz
	Maximum turbo frequency	3.4 GHz	4.0 GHz
Frequency—Efficient cores
	Processor base frequency	3.4 GHz	3.4 GHz
	Maximum turbo frequency	3.4 GHz	4.0 GHz
Thermal Mode/Thermal Design Power (TDP)
	Cool	13 W	13 W
	Optimized	15 W	15 W
	Quiet	12 W	12 W
	Ultra performance	21 W	21 W
		NOTE:Processor clock speed and thermal design power differ according to the thermal mode selected in the Dell Optimizer App on your computer.
Processor cache		42 MB	42 MB
Neural Processing Unit (performance)		Up to 45 TOPS	Up to 45 TOPS
Integrated graphics		Qualcomm Adreno Graphics	Qualcomm Adreno Graphics

Chipset

The following table lists the details of the chipset that is supported by your Latitude 7455.

Table 1. Chipset The following table lists the details of the chipset that is supported by your Latitude 7455.
Description	Option one	Option two
Processors	Qualcomm Snapdragon X Plus	Qualcomm Snapdragon X Elite
Chipset	Integrated in the processor	Integrated in the processor
DRAM bus width	128-bit	128-bit
Flash EPROM	64 MB	64 MB
PCIe bus	Up to Gen 4	Up to Gen 4

Operating system

Your Latitude 7455 supports the following operating systems:

Windows 11 Home, ARM
Windows 11 Pro, ARM

Memory

The following table lists the memory specifications of your Latitude 7455.

Table 1. Memory specifications
The following table provides the detailed memory specifications of Latitude 7455.
Description		Values
Memory slots		Onboard memory NOTE: The memory is integrated on the system board and is not upgradable.
Memory type		LPDDR5x
Memory speed		8448 MT/s
Maximum memory configuration		32 GB
Minimum memory configuration		16 GB
Memory configurations supported		16 GB: LPDDR5x, 8448 MT/s (onboard) 32 GB: LPDDR5x, 8448 MT/s (onboard)

External ports

The following table lists the external ports of your Latitude 7455.

Table 1. External ports
The following table lists ports and connectors available on Latitude 7455.
Description	Values
USB ports	One USB 3.2 Gen 1 port Two USB4 40 Gbps USB Type-C ports with Power Delivery and DisplayPort NOTE:You can connect a USB Type-C power adapter or a Dell docking station to one of the two USB Type-C ports. If your docking station has two cables, do not connect both cables to the two USB Type-C ports simultaneously. You may encounter issues with the charging circuits when this method of connection is used. For more information, search in the Knowledge Base Resource at the Dell Support site.
Audio port	One Global headset audio jack
Video port	Two USB4 40 Gbps USB Type-C ports with Power Delivery and DisplayPort
Media-card reader	One microSD-card slot
Power-adapter port	Supported through the USB4 40 Gbps USB Type-C ports with Power Delivery and DisplayPort. NOTE:You can connect a USB Type-C power adapter or a Dell docking station to one of the two USB Type-C ports. If your docking station has two cables, do not connect both cables to the two USB Type-C ports simultaneously. You may encounter issues with the charging circuits when this method of connection is used. For more information, search in the Knowledge Base Resource at the Dell Support site.
SIM-card slot	One nano-SIM card slot (optional) NOTE:Availability of the nano-SIM card slot depends on the region and configuration ordered.

Internal slots

The following table lists the internal slots of your Latitude 7455.

Table 1. Internal slotsThe following table lists the internal slots on your Latitude 7455.
Description	Values
M.2	One M.2 2230 slot for solid state drive One M.2 3042 slot for WWAN card (for computers that are shipped with WWAN support) NOTE:DO NOT insert any SSD into the M.2 3042 slot for WWAN card. NOTE:To learn more about the features of different types of M.2 cards, search Dell Support Site.

Wireless module

The following table lists the Wireless Local Area Network (WLAN) module that is supported on your Latitude 7455.

Table 1. Wireless module specifications
The following table provides the wireless module specifications of Latitude 7455.
Description	Values
Model number	Qualcomm FastConnect 7800 DBS (onboard)
Transfer rate	Up to 5760 Mbps
Frequency bands supported	2.4 GHz/5 GHz/6 GHz
Wireless standards	WiFi 802.11a/b/g Wi-Fi 4 (WiFi 802.11n) Wi-Fi 5 (WiFi 802.11ac) Wi-Fi 6E (WiFi 802.11ax) Wi-Fi 7 (WiFi 802.11be)
Encryption	64-bit/128-bit WEP AES-CCMP TKIP
Bluetooth wireless card NOTE:The functionality of the Bluetooth wireless card may vary based on the operating system.	Bluetooth 5.4 wireless card

WWAN module

The following table lists the Wireless Wide Area Network (WWAN) module supported on your Latitude 7455.

NOTE:The WWAN module is only available on computers that are manufactured with the WWAN (Cellular Internet) capability. WWAN capability cannot be added to the computer after purchase.

NOTE:Availability of the eSIM feature on this module depends your region and requirements of your mobile carrier.

NOTE:For instructions on how to setup SIM or eSIM connections on your computer, see the SIM/eSIM Setup Guide for Windows available with your product documentation at Dell Support Site.

Table 1. WWAN module specificationsThe following table provides the WWAN module specifications of your computer.
Description	Values
Model number	Qualcomm Snapdragon X62 Global 5G Modem (DW5932e)
Form Factor	M.2 3042 Key-B
Host Interface	PCIe Gen3
Network Standard	NR FR1 (Sub6) FDD/TDD, LTE FDD/TDD, WCDMA/HSPA+, GPS/GLONASS/Galileo/Beidou
Transfer data rate	5G NR: DL 3.5 Gbps/UL 900 Mbps LTE: DL 1.6 Gbps (CAT19)/UL 211 Mbps (CAT18) UMTS: DL DC-HSPA+ Rel8: 42 Mbps/UL 5.76 Mbps
Operating Frequency Bands	NR (n1, n2, n3, n5, n7, n8, n12, n13, n14, 18, n20, n25, n26, n28, n30, n38, n40, n41, n48, n53, n66, n70, n71, n75, n76, n77, n78, n79) LTE (B1, B2, B3, B4, B5, B7, B8, B12, B13, B14, B17, B18, B19, B20, B25, B26, B28, B29, B30, B32, B34, B38, B39, B40, B41, B42, B43, B46, B48, B66, B71) WCDMA/HSPA+ (1, 2, 4, 5, 8)
Power supply	DC 3.135 V to 3.63 V, Typical 3.30 V
SIM card	Supported through an external SIM slot
eSIM with Dual SIM (DSSA)	Supported NOTE:The availability of eSIM functionality that is embedded on the module depends the region and specific carrier requirements.
Antenna Diversity	Supported
Radio On/Off	Supported
Wake On Wireless	Supported
Temperature	Normal operating temperature: -30°C to +70°C Extended operating temperature: -40°C to +85°C Storage temperature: -40°C to +85°C
Antenna connector	WWAN Main Antenna x 1 WWAN Diversity Antenna x 1 4 x 4 MIMO Antenna x 2
NOTE:For instructions on how to find your computer's International Mobile Equipment Identity (IMEI) number, search in the Knowledge Base Resource at Dell Support Site.

Audio

The following table lists the audio specifications of your Latitude 7455.

Table 1. Audio specifications
The following table provides the detailed audio specifications of Latitude 7455.
Description		Values
Audio controller		Qualcomm WCD9385
Stereo conversion		Supported
Internal audio interface		SoundWire
External audio interface		Global headset audio jack
Number of speakers		4
Internal-speaker amplifier		Supported
External volume controls		Keyboard shortcut controls
Speaker output:
	Average	Woofer: 2 W x 2 Tweeter: 2 W x 2
	Peak	Woofer: 3 W x 2 Tweeter: 2.5 W x 2
Microphone		Dual-array microphones

Storage

This section lists the storage options on your Latitude 7455.

Your Latitude 7455 supports one M.2 2230 solid state drive.

Table 1. Storage specifications
The following table provides the different storage options available on Latitude 7455.
Storage type	Interface type	Capacity
M.2 2230 solid state drive	PCIe Gen4 NVMe, up to 64 Gbps	Up to 1 TB

Media-card reader

The following table provides the specification of media cards that are supported by your Latitude 7455.

Table 1. Media-card reader specificationsThe following table provides the specification of media cards that are supported by your Latitude 7455.
Description	Values
Media-card slot type	One microSD-card slot
Media-cards supported	Micro Secure Digital (mSD) Micro Secure Digital High Capacity (mSDHC) Micro Secure Digital Extended Capacity (mSDXC)
NOTE:The maximum capacity of the media-card reader varies depending on the standard of the media card that is inserted in your computer.

Keyboard

The following table lists the keyboard specifications of your Latitude 7455.

Table 1. Keyboard specifications
The following table provides the detailed keyboard specifications of Latitude 7455.
Description	Values
Keyboard type	Standard backlit keyboard with AI hotkey
Keyboard layout	QWERTY
Number of keys	Arabic, Canada (Bilingual) MUI, Chinese (Traditional), English International, English US, Hebrew, Ukrainian: 79 keys Belgian, Czech and Slovakian (MUI), English UK, French (European), German, Hungarian, Italian, Nordic (MUI), Portuguese Iberian, Spanish (Castillian), Spanish (Latin America), Swiss European (MUI), Turkish: 80 keys Japanese: 83 keys
Keyboard size	X = 19.05 mm key pitch Y = 18.05 mm key pitch
Keyboard shortcuts	Some keys on your keyboard have two symbols on them. These keys can be used to type alternate characters or to perform secondary functions. To type the alternate character, press Shift and the desired key. To perform secondary functions, press fn and the desired key. NOTE:You can define the primary behavior of the function keys (F1–F12) changing Fn Lock Options in the BIOS setup program. NOTE:If Copilot in Windows is not available on your computer, the Copilot key launches Recall. If both Recall and Copilot in Windows are not available on your computer, the Copilot key launches Windows Search. For more information about Copilot in Windows and Recall, search in the Knowledge Base Resource at the Dell Support Site.

Keyboard function keys of Latitude 7455

NOTE:Keyboard characters may differ depending on the keyboard language configuration. Keys that are used for shortcuts remain the same across all language configurations.

Some keys on your keyboard have two symbols on them. These keys can be used to type alternate characters or to perform secondary functions. The symbol that is shown on the lower part of the key refers to the character that is typed out when the key is pressed. If you press shift and the key, the symbol that is shown on the upper part of the key is typed out. For example, if you press 2, 2 is typed out; if you press Shift + 2, @ is typed out.

The keys F1-F12 at the top row of the keyboard are function keys for multimedia control indicated by the icon at the bottom of the key. Press the function key to invoke the task represented by the icon. For example, pressing F1 mutes the audio (refer to the table below).

However, if the function keys F1-F12 are needed for specific software applications, multimedia functionality can be disabled by pressing fn + esc. Later, multimedia control can be invoked by pressing fn and the respective function key. For example, mute audio by pressing fn + F1.

Table 1. List of keyboard shortcuts
The following table lists the keyboard shortcuts and their descriptions.
Key	Primary behavior
F1	Mute or unmute audio.
F2	Decrease audio volume.
F3	Increase audio volume.
F4	Play or pause the media file.
F5	Keyboard backlight NOTE:Toggle to cycle the keyboard backlight status through off, low-backlight, and high-backlight.
F6	Decrease the screen brightness.
F7	Increase the screen brightness.
F8	Switch to the external display.
F10	Print screen
F11	Home
F12	End
Copilot	Launch Copilot in Windows. NOTE:If Copilot in Windows is not available on your computer, the Copilot key launches Recall. If both Recall and Copilot in Windows are not available on your computer, the Copilot key launches Windows Search. For more information about Copilot in Windows and Recall, search in the Knowledge Base Resource at the Dell Support Site.

The fn key is also used with selected keys on the keyboard to invoke other secondary functions.

NOTE:Keyboard characters may differ depending on the keyboard language configuration. Keys that are used for tasks remain the same, regardless of the keyboard language.

Table 2. Secondary behaviorThe following table lists the secondary behavior of each key with the Function (fn) key.
Function key	Secondary behavior
fn + F1	Operating system and application-specific F1 behavior
fn + F2	Operating system and application-specific F2 behavior
fn + F3	Operating system and application-specific F3 behavior
fn + F4	Operating system and application-specific F4 behavior
fn + F5	Operating system and application-specific F5 behavior
fn + F6	Operating system and application-specific F6 behavior
fn + F8	Operating system and application-specific F8 behavior
fn + F9	Operating system and application-specific F9 behavior
fn + F10	Operating system and application-specific F10 behavior
fn + F11	Operating system and application-specific F11 behavior
fn + F12	Operating system and application-specific F12 behavior
fn + B	Pause or break.
fn + S	Toggle scroll lock.
fn + R	System request.
fn + Copilot	Open the application menu.
fn + esc	Toggles the function key on and off.
fn + pg up arrow	Scroll up the document or page.
fn + pg down arrow	Scroll down the document or page.
fn + left arrow	Home (move to the beginning of the document).
fn + right arrow	End (move to the end of the document).

Camera

The following table lists the camera specifications of your Latitude 7455.

Table 1. Camera specifications
The following table provides the detailed camera specifications of Latitude 7455.
Description		Values
Number of cameras		Two
Camera type		FHD RGB camera IR camera
Camera location		Front camera
Camera sensor type		CMOS sensor technology
Camera resolution:
	Still image	2.07 megapixel
	Video	1920 x 1080 (FHD) at 30 fps
Infrared camera resolution:
	Video	1280 x 720 at 30 fps
Diagonal viewing angle:
	Camera	80.20 degrees
	Infrared camera	86.60 degrees

Touchpad

The following table lists the touchpad specifications of your Latitude 7455.

Table 1. Touchpad specifications
The following table provides the detailed touchpad specifications of Latitude 7455.
Description		Values
Touchpad resolution:		>300 dpi
Touchpad dimensions:
	Horizontal	115.00 mm (4.53 in.)
	Vertical	80.00 mm (3.15 in.)
Touchpad gestures		For more information about the touchpad gestures available on Windows, search Microsoft Support Site.

Power adapter

The following table lists the power adapter specifications of your Latitude 7455.

Table 1. Power-adapter specifications
The following table provides the detailed power adapter specifications of Latitude 7455.
Description		Values
Type		65 W AC adapter, USB Type-C
Power-adapter dimensions:
	Height	28.00 mm (1.10 in.)
	Width	51.00 mm (2.01 in.)
	Depth	112.00 mm (4.41 in.)
Input voltage		100 VAC–240 VAC
Input frequency		50 Hz–60 Hz
Input current (maximum)		1.70 A
Output current (continuous)		20 V/3.25 A 15 V/3 A 9 V/3 A 5 V/3 A
Rated output voltage		20 VDC 15 VDC 9 VDC 5 VDC
Temperature range:
	Operating	0°C to 40°C (32°F to 104°F)
	Storage	-40°C to 70°C (-40°F to 158°F)
CAUTION:Operating and storage temperature ranges may differ among components, so operating or storing the device outside these ranges may impact the performance of specific components.

Power adapter requirements of Latitude 7455

NOTE:If you did not purchase the Dell-branded power adapter that is recommended for your computer, ensure that the power adapter you use meets the following requirements.

The following table lists the power adapter requirements for your Latitude 7455.

Table 1. Power adapter requirementsLatitude 7455 power adapter requirements.
Description	Value
Power that is required from a power adapter to achieve optimal performance.	65 W
Power that charges the computer at a slower speed. NOTE:A warning message may appear informing you about the use of a lower-powered adapter and slower charging speed.	Less than 60 W
Minimum power that is required from a power adapter to operate the computer and charge the battery. NOTE:A warning message appears informing you about the use of a lower-powered adapter and slower charging speed.	27 W
USB Power Delivery (PD) fast charging.	Supported
ExpressCharge mode	Supported NOTE:Ensure that the computer is connected to a 65 W power adapter for this feature to be supported. NOTE:ExpressCharge mode must also be enabled in the BIOS Setup screen. Select Power > Battery Configuration > ExpressCharge, then press Enter.

Battery

The following table lists the battery specifications of your Latitude 7455.

Table 1. Battery specifications
The following table provides the detailed battery specifications of Latitude 7455.
Description		Values
Battery type		3-cell, 54 Wh, lithium-ion (polymer), ExpressCharge
Battery voltage		11.40 VDC
Battery weight (maximum)		0.22 kg (0.49 lb)
Battery dimensions:
	Height	5.73 mm (0.23 in.)
	Width	263.00 mm (10.35 in.)
	Depth	68.90 mm (2.71 in.)
Temperature range:
	Operating	Charge: 0°C to 45°C (32°F to 113°F) Discharge: 0°C to 70°C (32°F to 158°F)
	Storage	-20°C to 65°C (-4°F to 149°F)
Battery operating time		Varies depending on operating conditions and can significantly reduce under certain power-intensive conditions
Battery charging time (approximate) NOTE:You can control the charging time, duration, start and end time, and so on, using the Dell Power Manager application. For more information about Dell Power Manager, search Dell Support Site.		ExpressCharge Method: 0% to 80% battery capacity in 1 hour 0% to full battery capacity in 2 hours Standard Charge Method: 0% to full battery capacity in 3 hours
Coin-cell battery		CR2032
CAUTION:Operating and storage temperature ranges may differ among components, so operating or storing the device outside these ranges may impact the performance of specific components. CAUTION:Dell Technologies recommends that you charge the battery regularly for optimal power consumption.

Power requirements (for computers shipped with 3-cell, 54 Wh battery)

NOTE: The information in this section is applicable to the European Union (EU) countries.

The power that is delivered by the charger must be between a minimum of 27 W that is required by the radio equipment, and a maximum of 65 W in order to achieve the maximum charging speed.

This computer supports USB Power Delivery (PD) fast charging.

Fingerprint reader

The following table lists the fingerprint-reader specifications of your Latitude 7455.

NOTE:The fingerprint reader is on the power button.

Table 1. Fingerprint reader specifications
The following table provides the specifications of fingerprint reader of Latitude 7455.
Description	Values
Sensor technology	Capacitive
Sensor resolution	500 dpi
Sensor pixel size	108 x 88

Display

The following table lists the display specifications of your Latitude 7455.

Table 1. Display specifications
The following table provides the detailed display specifications of Latitude 7455.
Description		Values
Display type		14 inch, Quad High Definition plus (QHD+)
Touch options		Yes
Display-panel technology		In-Plane Switching (IPS)
Display-panel dimensions (active area):
	Height	188.50 mm (7.42 in.)
	Width	301.59 mm (11.87 in.)
	Diagonal	355.65 mm (14.00 in.)
Display-panel native resolution		2560 x 1600
Luminance (typical)		400 nits
Megapixels		4.1
Color gamut		100% sRGB
Pixels Per Inch (PPI)		215.63
Contrast ratio (minimum)		1000:1
Response time (maximum)		35 milliseconds
Refresh rate		60 Hz/48 Hz
Horizontal view angle		+/- 85 degrees
Vertical view angle		+/- 85 degrees
Pixel pitch		0.1178 x 0.1178 mm
Power consumption (maximum)		3.75 W
Anti-glare vs glossy finish		Anti-glare

GPU—Integrated

The following table lists the specifications of the integrated Graphics Processing Unit (GPU) supported by your Latitude 7455.

Table 1. GPU—Integrated
The following table provides the detailed integrated graphics specifications of Latitude 7455.
Controller	Memory size	Processor
Qualcomm Adreno Graphics	Shared system memory	Qualcomm Snapdragon X Elite X1E-80-100 Qualcomm Snapdragon X Plus X1P-64-100

External display support

The following table lists the external display support for your Latitude 7455.

Table 1. External display supportThe following table lists the external display support for your Latitude 7455.
Graphics card	Supported external displays with laptop display enabled	Supported external displays with laptop display disabled
Qualcomm Adreno Graphics (iGPU only)	3	3
Maximum resolution supported	5120 x 2880 @60 Hz or 3240 x 2160 @120 Hz

Sensors

The following table lists the sensors of your Latitude 7455.

Table 1. Sensor The following table lists the sensor of your Latitude 7455.
Sensor support
Ambient Light Sensor
Wake/Power on with lid open
Hall sensor

Hardware security

The following table lists the hardware security of your Latitude 7455.

Table 1. Hardware security The following table provides the hardware security details on your Latitude 7455.
Hardware security
Trusted Platform Module (TPM) 2.0 discrete
FIPS 140-2 certification for TPM
TCG Certification for TPM (Trusted Computing Group)
Fingerprint reader in the power button (for computers shipped with fingerprint reader)

Operating and storage environment

This table lists the operating and storage specifications of your Latitude 7455.

Airborne contaminant level: G1 as defined by ISA-S71.04-1985

Table 1. Computer environment
The following table lists the operating and storage environment conditions of Latitude 7455.
Description	Operating	Storage
Temperature range	0°C to 35°C (32°F to 95°F)	-30°C to 65°C (-22°F to 149°F)
Relative humidity (maximum)	10% to 90% (non-condensing)	0% to 95% (non-condensing)
Vibration (maximum)^*	0.66 GRMS	1.30 GRMS
Shock (maximum)	110 G†	160 G†
Altitude range	-15.2 m to 3048 m (-49.87 ft to 10,000 ft)	-15.2 m to 10,668 m (-49.87 ft to 35,000 ft)
CAUTION:Operating and storage temperature ranges may differ among components, so operating or storing the device outside these ranges may impact the performance of specific components.

^{* Measured using a random vibration spectrum that simulates the user environment.}

^{† Measured using a 2 ms half-sine pulse.}

Dell support policy

For information about Dell support policy, search Dell Support Site.

Dell low blue light display

WARNING:Prolonged exposure to blue light from the display may lead to long-term effects such as eye strain, eye fatigue, or damage to the eyes.

Blue light is a color in the light spectrum which has a short wavelength and high energy. Chronic exposure to blue light, particularly from digital sources may disrupt sleep patterns and cause long-term effects such as eye strain, eye fatigue, or damage to the eyes.

The display on this computer is designed to minimize blue light and complies with TÜV Rheinland's requirement for low blue light displays.

Low blue light mode is enabled at the factory, so no further configuration is necessary.

To reduce the risk of eye strain, it is also recommended that you:

Position the display at a comfortable viewing distance between 20 and 28 inches (50 cm and 70 cm) from your eyes.
Blink frequently to moisten your eyes, wet your eyes with water, or apply suitable eye drops.
Take an extended break for 20 minutes every two hours.
Look away from your display, and gaze at a distant object at 20 ft (609.60 cm) away for at least 20 seconds during each break.

Using the privacy shutter

Slide the privacy shutter to the left to unblock the camera lens.
Slide the privacy shutter to the right to cover the camera lens.
Figure 1. Using the privacy shutter

Dell Optimizer

This section details the Dell Optimizer specifications of your Latitude 7455.

Dell Optimizer is a software application that dynamically updates the foreground application by changing the priority of system settings to optimize the performance of your applications.

On the Latitude 7455 with Dell Optimizer, the following features are supported:

Improved user experience through application optimization.
Quick application launch and seamless application transition.
Options of thermal mode settings that enhance the performance of your computer.
Get information about the battery that is connected to your computer.

For more information about configuring and using these features, search for the Dell Optimizer User 's Guide at the Dell Support site.