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Inspiron 7405 2n1
Setup and Specifications
Regulatory Model: P126G
Regulatory Type: P126G001
June 2020
Rev. A01
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Notes, cautions, and warnings
NOTE: A NOTE indicates important information that helps you make better use of your product.
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the
problem.
WARNING: A WARNING indicates a potential for property damage, personal injury, or death.
© 2020 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other
trademarks may be trademarks of their respective owners.
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Contents
Chapter 1: Set up your Inspiron 7405 2n1.......................................................................................... 4
Chapter 2: Views of Inspiron 7405 2n1.............................................................................................. 6
Right........................................................................................................................................................................................ 6
Left.......................................................................................................................................................................................... 6
Base......................................................................................................................................................................................... 7
Display..................................................................................................................................................................................... 8
Bottom.................................................................................................................................................................................... 9
Modes..................................................................................................................................................................................... 9
Chapter 3: Using the privacy shutter............................................................................................... 11
Chapter 4: Specifications of Inspiron 7405 2n1.................................................................................13
Dimensions and weight........................................................................................................................................................13
Processor.............................................................................................................................................................................. 14
Chipset...................................................................................................................................................................................14
Operating system................................................................................................................................................................. 14
Memory................................................................................................................................................................................. 14
External ports....................................................................................................................................................................... 15
Internal slots..........................................................................................................................................................................15
Wireless module....................................................................................................................................................................16
Audio...................................................................................................................................................................................... 16
Storage.................................................................................................................................................................................. 16
Media-card reader................................................................................................................................................................17
Keyboard................................................................................................................................................................................17
Camera.................................................................................................................................................................................. 18
Touchpad...............................................................................................................................................................................18
Power adapter...................................................................................................................................................................... 19
Battery...................................................................................................................................................................................19
Display...................................................................................................................................................................................20
Fingerprint reader.................................................................................................................................................................21
GPU—Integrated.................................................................................................................................................................21
Operating and storage environment..................................................................................................................................21
Chapter 5: Keyboard shortcuts.......................................................................................................22
Chapter 6: Getting help and contacting Dell.................................................................................... 24
Contents 3
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Set up your Inspiron 7405 2n1
NOTE: The images in this document may differ from your computer depending on the configuration you ordered.
1. Connect the power adapter and press the power button.
1
NOTE: The battery may go into power-saving mode during shipment to conserve charge on the battery. Ensure that
the power adapter is connected to your computer when it is turned on for the first time.
2. Finish Windows setup.
Follow the on-screen instructions to complete the setup. When setting up, Dell recommends that you:
• Connect to a network for Windows updates.
NOTE:
If connecting to a secured wireless network, enter the password for the wireless network access when
prompted.
• If connected to the internet, sign-in with or create a Microsoft account. If not connected to the internet, create an offline account.
• On the Support and Protection screen, enter your contact details.
3. Locate and use Dell apps from the Windows Start menu—Recommended
Table 1. Locate Dell apps
Resources Description
My Dell
Centralized location for key Dell applications, help articles, and other important information about your
computer. It also notifies you about the warranty status, recommended accessories, and software updates
if available.
SupportAssist
Pro-actively checks the health of your computer’s hardware and software. The SupportAssist OS Recovery
tool troubleshoots issues with the operating system. For more information, see the SupportAssist
documentation at www.dell.com/support.
4 Set up your Inspiron 7405 2n1
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Table 1. Locate Dell apps (continued)
Resources Description
NOTE: In SupportAssist, click the warranty expiry date to renew or upgrade your warranty.
Dell Update
Updates your computer with critical fixes and latest device drivers as they become available. For more
information about using Dell Update, see the knowledge base article SLN305843 at www.dell.com/support.
Dell Digital Delivery
Download software applications, which are purchased but not pre-installed on your computer. For more
information about using Dell Digital Delivery, see the knowledge base article 153764 at www.dell.com/
support.
Set up your Inspiron 7405 2n1 5
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Topics:
• Right
• Left
• Base
• Display
• Bottom
• Modes
Right
2
Views of Inspiron 7405 2n1
1. SD-card slot
Reads from and writes to the SD card.
2. USB 3.2 Gen 1 port
Connect peripherals such as external storage devices and printers. Provides data transfer speeds up to 5 Gbps.
3. Headset port
Connect headphones or a headset (headphone and microphone combo).
Left
1. Power-adapter port
Connect a power adapter to provide power to your computer.
2. Power and battery-status light
Indicates the power state and battery state of the computer.
Solid white—Power adapter is connected and the battery is charging.
Solid amber—Battery charge is low or critical.
Off—Battery is fully charged.
3. HDMI port
Connect to a TV or another HDMI-in enabled device. Provides video and audio output.
4. USB 3.2 Gen 1 port
Connect peripherals such as external storage devices and printers. Provides data transfer speeds up to 5 Gbps.
6 Views of Inspiron 7405 2n1
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5. USB 3.2 Gen 1 (Type-C) port/DisplayPort
Connect peripherals such as external storage devices, printers, and external displays. Provides data transfer speeds up to 5 Gbps.
NOTE: A USB Type-C to DisplayPort adapter (sold separately) is required to connect a DisplayPort device.
Base
1. Power button with optional fingerprint reader
Press to turn on the computer if it is turned off, in sleep state, or in hibernate state.
When the computer is turned on, press the power button to put the computer into sleep state; press and hold the power button for 10
seconds to force shut-down the computer.
If the power button has a fingerprint reader, place your finger on the power button to log in.
NOTE:
You can customize power-button behavior in Windows. For more information, see
www.dell.com/support/manuals.
NOTE: The power-status light on the power button is available only on computers without the fingerprint reader.
Computers shipped with the fingerprint reader integrated on the power button will not have the power-status light
on the power button.
NOTE: To reset the battery, press and hold the power button for 25 seconds.
2. Touchpad
Move your finger on the touchpad to move the mouse pointer. Tap to left-click and two finger tap to right-click.
3. Left-click area
Press to left-click.
4. Right-click area
Press to right-click.
Me and My Dell
at
Views of Inspiron 7405 2n1
7
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Display
1. Left microphone
Provides digital sound input for audio recording and voice calls.
2. Privacy shutter
Slide the privacy shutter to cover the camera lens and protect your privacy when the camera is not in use.
3. Camera
Enables you to video chat, capture photos, and record videos.
4. Camera-status light
Turns on when the camera is in use.
5. Right microphone
Provides digital sound input for audio recording and voice calls.
8
Views of Inspiron 7405 2n1
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Bottom
1. Left speaker
Provides audio output.
2. Service Tag label
The Service Tag is a unique alphanumeric identifier that enables Dell service technicians to identify the hardware components in your
computer and access warranty information.
3. Right speaker
Provides audio output.
Modes
Notebook
Views of Inspiron 7405 2n1
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Tablet
Stand
Tent
10
Views of Inspiron 7405 2n1
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3
Using the privacy shutter
Using the privacy shutter 11
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1. Slide the privacy shutter to the left to access the camera lens.
2. Slide the privacy shutter to the right to cover the camera lens.
12 Using the privacy shutter
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Specifications of Inspiron 7405 2n1
Topics:
• Dimensions and weight
• Processor
• Chipset
• Operating system
• Memory
• External ports
• Internal slots
• Wireless module
• Audio
• Storage
• Media-card reader
• Keyboard
• Camera
• Touchpad
• Power adapter
• Battery
• Display
• Fingerprint reader
• GPU—Integrated
• Operating and storage environment
4
Dimensions and weight
The following table lists the height, width, depth, and weight of your Inspiron 7405 2n1.
Table 2. Dimensions and weight
Description Values
Height:
Front height
Rear height
Width
Depth
Weight (maximum)
16.44 mm (0.65 in.)
17.94 mm (0.71 in.)
322.50 mm (12.70 in.)
221.90 mm (8.74 in.)
1.64 kg (3.62 lbs)
NOTE: The weight of your computer depends on the
configuration ordered and manufacturing variability.
Specifications of Inspiron 7405 2n1 13
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Processor
The following table lists the details of the processors supported by your Inspiron 7405 2n1.
Table 3. Processor
Description Option one Option two
Processor type
Processor wattage
Processor core count
Processor thread count
Processor speed
Processor cache
Integrated graphics
AMD Ryzen 5 4500U AMD Ryzen 7 4700U
15 W 15 W
6 8
6 8
Up to 4 GHz Up to 4.2 GHz
8 MB 8 MB
AMD Radeon Graphics AMD Radeon Graphics
Chipset
The following table lists the details of the chipset supported by your Inspiron 7405 2n1
Table 4. Chipset
Description Option one Option two
Processors
Chipset
AMD Ryzen 5 4500U AMD Ryzen 7 4700U
Integrated in the processor Integrated in the processor
DRAM bus width
Flash EPROM
PCIe bus
64-bit 64-bit
16 MB 16 MB
Up to Gen3 Up to Gen3
Operating system
Your Inspiron 7405 2n1 supports the following operating systems:
• Windows 10 Professional (64-bit)
• Windows 10 Home (S mode)
Memory
The following table lists the memory specifications of your Inspiron 7405 2n1.
Table 5. Memory specifications
Description Values
Memory slots
Memory type
Two-SODIMM slots
Dual-Channel DDR4
Memory speed
14 Specifications of Inspiron 7405 2n1
3200 MHz
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Table 5. Memory specifications (continued)
Description Values
Maximum memory configuration
Minimum memory configuration
Memory size per slot
Memory configurations supported
32 GB
4 GB
4 GB, 8 GB, 16 GB
• 4 GB, 1 x 4 GB, DDR4, 3200 MHz
• 8 GB, 1 x 8 GB, DDR4, 3200 MHz
• 8 GB, 1 x 4 GB + 1 x 4 GB, DDR4, 3200 MHz, dual-channel
• 12 GB, 1 x 4 GB + 1 x 8 GB, DDR4, 3200 MHz
• 16 GB, 1 x 16 GB, DDR4, 3200 MHz
• 16 GB, 1 x 8 GB + 1 x 8 GB, DDR4, 3200 MHz, dual-channel
External ports
The following table lists the external ports on your Inspiron 7405 2n1.
Table 6. External ports
Description Values
USB ports
Audio port
• Two USB 3.2 Gen 1 ports
• One USB 3.2 Gen 1 (Type-C) port with DisplayPort support
One headset (headphone and microphone combo) port
Video port
Media-card reader
Docking port
Power-adapter port
Security
One HDMI 1.4b port
One SD-card slot
Not supported
One 4.5 mm x 2.9 mm DC-in
N/A
Internal slots
The following table lists the internal slots of your Inspiron 7405 2n1.
Table 7. Internal slots
Description Values
M.2
• One M.2 2230 slot for WiFi and Bluetooth combo card
• One M.2 2230/2280 slot for solid-state drive
NOTE: To learn more about the features of different
types of M.2 cards, see the knowledge base article
SLN301626 at www.dell.com/support.
Specifications of Inspiron 7405 2n1 15
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Wireless module
The following table lists the Wireless Local Area Network (WLAN) modules supported on your Inspiron 7405 2n1.
Table 8. Wireless module specifications
Description Option one Option two
Model number
Transfer rate
Frequency bands supported
Wireless standards
Encryption
Bluetooth
Intel AX200 Qualcomm QCA61x4A
Up to 2400 Mbps Up to 867 Mbps
2.4 GHz/5 GHz 2.4 GHz/5 GHz
Wi-Fi 6 (WiFi 802.11ax) Wi-Fi 5 (WiFi 802.11ac)
• 64-bit/128-bit WEP
• AES-CCMP
• TKIP
Bluetooth 5.0 Bluetooth 4.2
Audio
The following table lists the audio specifications of your Inspiron 7405 2n1.
Table 9. Audio specifications
Description Values
Audio controller
Stereo conversion
Realtek ALC3204
Supported
N/A
Internal audio interface
External audio interface
Number of speakers
Internal-speaker amplifier
External volume controls
Speaker output:
Average speaker output
Peak speaker output
Subwoofer output
Microphone
High-definition audio
Universal audio jack
Two
Supported
Keyboard shortcut controls
2 W
2.5 W
Not supported
Dual-array microphones
Storage
This section lists the storage options on your Inspiron 7405 2n1.
Your Inspiron 7405 2n1 supports one of the following storage configurations:
• One M.2 2230 solid-state drive
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Specifications of Inspiron 7405 2n1
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• One M.2 2280 solid-state drive
Table 10. Storage specifications
Storage type Interface type Capacity
One M.2 2230 PCIe solid-state drive PCIe Gen3.0 NVMe, up to 32 Gbps 128 GB
One M.2 2230 PCIe solid-state drive PCIe Gen3.0 NVMe, up to 32 Gbps 256 GB
One M.2 2230 PCIe solid-state drive PCIe Gen3.0 NVMe, up to 32 Gbps 512 GB
One M.2 2230 PCIe solid-state drive PCIe Gen3.0 NVMe, up to 32 Gbps 256 GB
One M.2 2280 PCIe solid-state drive PCIe Gen3.0 NVMe, up to 32 Gbps 512 GB
One M.2 2280 PCIe solid-state drive PCIe Gen3.0 NVMe, up to 32 Gbps 1 TB
One M.2 2280 PCIe solid-state drive PCIe Gen3.0 NVMe, up to 32 Gbps 2 TB
Media-card reader
The following table lists the media cards supported by your Inspiron 7405 2n1.
Table 11. Media-card reader specifications
Description Values
Media-card type
Media-cards supported
NOTE: The maximum capacity supported by the media-card reader varies depending on the standard of the media card
installed in your computer.
One SD card slot
• Secure Digital (SD)
• Secure Digital High Capacity (SDHC)
• Secure Digital Extended Capacity (SDXC)
Keyboard
The following table lists the keyboard specifications of your Inspiron 7405 2n1.
Table 12. Keyboard specifications
Description Values
Keyboard type
Keyboard layout
Number of keys
• Standard non-backlit keyboard
• Backlit keyboard
QWERTY
• United States and Canada: 81 keys
• United Kingdom: 82 keys
• Japan: 85 keys
Keyboard size
Keyboard shortcuts
X=18.7 mm key pitch
Y=18.05 mm key pitch
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
Specifications of Inspiron 7405 2n1 17
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Table 12. Keyboard specifications (continued)
Description Values
and the desired key. To perform secondary functions, press Fn and
the desired key.
For more information, see keyboard shortcutsKeyboard shortcuts.
Camera
The following table lists the camera specifications of your Inspiron 7405 2n1.
Table 13. Camera specifications
Description Values
NOTE: You can define the primary behavior of the
function keys (F1–F12) changing Function Key Behavior
in BIOS setup program.
Number of cameras
Camera type
Camera location
Camera sensor type
Camera resolution:
Still image
Video
Diagonal viewing angle:
One
HD RGB camera
Front camera
CMOS sensor technology
0.92 megapixels
1280 x 720 (HD) at 30fps
74.90 degrees
Touchpad
The following table lists the touchpad specifications of your Inspiron 7405 2n1.
Table 14. Touchpad specifications
Description Values
Touchpad resolution:
Horizontal
1349
Vertical
Touchpad dimensions:
Horizontal
Vertical
Touchpad gestures For more information about touchpad gestures available on
18 Specifications of Inspiron 7405 2n1
929
115 mm (4.53 in.)
70 mm (2.76 in.)
Windows 10, see the Microsoft knowledge base article 4027871 at
support.microsoft.com.
Page 19
Power adapter
The following table lists the power adapter specifications of your Inspiron 7405 2n1.
Table 15. Power adapter specifications
Description Option one Option two
Type
Connector dimensions:
External diameter
Internal diameter
Input voltage
Input frequency
Input current (maximum)
Output current (continuous)
Rated output voltage
Temperature range:
Operating
Storage
Battery
45 W 65 W
4.50 mm 4.50 mm
2.90 mm 2.90 mm
100 VAC–240 VAC 100 VAC–240 VAC
50 Hz–60 Hz 50 Hz–60 Hz
1.30 A 1.50 A
2.31 A 3.34 A
19.50 VDC 19.50 VDC
0°C to 40°C (32°F to 104°F) 0°C to 40°C (32°F to 104°F)
-40°C to 70°C (-40°F to 158°F) -40°C to 70°C (-40°F to 158°F)
The following table lists the battery specifications of your Inspiron 7405 2n1.
Table 16. Battery specifications
Description Option one Option two
Battery type
Battery voltage
Battery weight (maximum)
Battery dimensions:
Height
Width
Depth
Temperature range:
Operating
Storage
Battery operating time Varies depending on operating conditions
3-cell "smart" lithium ion 4-cell "smart" lithium-ion
11.40 VDC 15.20 VDC
0.18 kg (0.40 lb) 0.23 kg (0.51 lb)
184.10 mm (7.25 in.) 239.10 mm (9.41 in.)
90.73 mm (3.57 in.) 90.73 mm (3.57 in.)
5.75 mm (0.23 in.) 5.75 mm (0.23 in.)
0°C to 35°C (32°F to 95°F) 0°C to 35°C (32°F to 95°F)
-40°C to 65°C (-40°F to 149°F) -40°C to 65°C (-40°F to 149°F)
Varies depending on operating conditions
and can significantly reduce under certain
power-intensive conditions.
and can significantly reduce under certain
power-intensive conditions.
Specifications of Inspiron 7405 2n1 19
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Table 16. Battery specifications (continued)
Description Option one Option two
Battery charging time (approximate)
Coin-cell battery
4 hours (when the computer is off)
NOTE: Control the charging time,
duration, start and end time, and so
on using the Dell Power Manager
application. For more information on
the Dell Power Manager see,
My Dell
CR 2032 CR 2032
on www.dell.com/.
Display
The following table lists the display specifications of your Inspiron 7405 2n1.
Table 17. Display specifications
Description Values
Display type
Display-panel technology
Display-panel dimensions (active area):
Height
Full High Definition (FHD)
Wide Viewing Angle (WVA)
174 mm (6.85 in.)
Me and
4 hours (when the computer is off)
NOTE: Control the charging time,
duration, start and end time, and so
on using the Dell Power Manager
application. For more information
on the Dell Power Manager see,
and My Dell
on www.dell.com/.
Me
Width
Diagonal
Display-panel native resolution
Luminance (typical)
Megapixels
Color gamut
Pixels Per Inch (PPI)
Contrast ratio (min)
Response time (max)
Refresh rate
Horizontal view angle
Vertical view angle
Pixel pitch
309.35 mm (12.18 in.)
355.60 mm (14.00 in.)
1920 x 1080
220 nits
2.07
NTSC (45% typical)
157 PPI
20.83
35 ms
60 Hz
80 degrees
80 degrees
0.161 mm
Power consumption (maximum)
Anti-glare vs glossy finish
Touch options
20 Specifications of Inspiron 7405 2n1
3.55 W
Glossy
Yes
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Fingerprint reader
The following table lists the fingerprint-reader specifications of your Inspiron 7405 2n1.
Table 18. Fingerprint reader specifications
Description Values
Fingerprint-reader sensor technology
Fingerprint-reader sensor resolution
Fingerprint-reader sensor pixel size
Capacitive
500 dpi
80 x 64
GPU—Integrated
The following table lists the specifications of the integrated Graphics Processing Unit (GPU) supported by your Inspiron 7405 2n1.
Table 19. GPU—Integrated
Controller External display support Memory size Processor
AMD Radeon graphics • One HDMI1.4b port
• USB 3.2 Gen 1 (Type-C)
port/DisplayPort
Shared system memory AMD Ryzen 5 4500U/AMD
Ryzen 7 4700U
Operating and storage environment
This table lists the operating and storage specifications of your Inspiron 7405 2n1.
Airborne contaminant level: G1 as defined by ISA-S71.04-1985
Table 20. Computer environment
Description Operating Storage
Temperature range
Relative humidity (maximum)
Vibration (maximum)
Shock (maximum)
Altitude (maximum)
* Measured using a random vibration spectrum that simulates user environment.
† Measured using a 2 ms half-sine pulse when the hard drive is in use.
*
0°C to 35°C (32°F to 95°F) -40°C to 65°C (-40°F to 149°F)
10% to 90% (non-condensing) 0% to 95% (non-condensing)
0.66 GRMS 1.30 GRMS
110 G† 160 G†
-15.2 m to 3048 m (-49.87 ft to 10000 ft) -15.2 m to 10668 m (-49.87 ft to 35000 ft)
Specifications of Inspiron 7405 2n1
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5
Keyboard shortcuts
NOTE: Keyboard characters may differ depending on the keyboard language configuration. Keys 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 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 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 multi-media control, as 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, multi-media functionality can be disabled by pressing
Fn + Esc. Subsequently, multi-media control can be invoked by pressing Fn and the respective function key. For example, mute audio by
pressing Fn + F1.
NOTE: You can also define the primary behavior of the function keys (F1–F12) by changing Function Key Behavior in
BIOS setup program.
Table 21. List of keyboard shortcuts
Function key Re-defined key (for multi-media
control)
Behavior
Mute audio
Decrease volume
Increase volume
Play/Pause
Toggle keyboard backlight (optional)
Decrease brightness
Increase brightness
22 Keyboard shortcuts
Switch to external display
Print screen
Page 23
Table 21. List of keyboard shortcuts (continued)
Function key Re-defined key (for multi-media
control)
The Fn key is also used with selected keys on the keyboard to invoke other secondary functions.
Behavior
Home
End
Table 22. List of keyboard shortcuts
Function key Behavior
Pause/Break
Sleep
Toggle between power and battery-status light/hard-drive activity
light
Toggle scroll lock
System request
Open application menu
Toggle Fn-key lock
Page up
Page down
Keyboard shortcuts 23
Page 24
Getting help and contacting Dell
Self-help resources
You can get information and help on Dell products and services using these self-help resources:
Table 23. Self-help resources
Self-help resources Resource location
Information about Dell products and services www.dell.com
My Dell app
Tips
Contact Support In Windows search, type Contact Support, and press Enter.
Online help for operating system www.dell.com/support/windows
6
Troubleshooting information, user manuals, set up instructions,
product specifications, technical help blogs, drivers, software
updates, and so on.
Dell knowledge base articles for a variety of computer concerns
Learn and know the following information about your product:
• Product specifications
• Operating system
• Setting up and using your product
• Data backup
• Troubleshooting and diagnostics
• Factory and system restore
• BIOS information
www.dell.com/support
1. Go to www.dell.com/support.
2. On the menu bar at the top of the Support page, select
Support > Knowledge Base.
3. In the Search field on the Knowledge Base page, type the
keyword, topic, or model number, and then click or tap the
search icon to view the related articles.
See Me and My Dell at www.dell.com/support/manuals.
To locate the Me and My Dell relevant to your product, identify
your product through one of the following:
• Select Detect Product.
• Locate your product through the drop-down menu under View
Products.
• Enter the Service Tag number or Product ID in the search
bar.
Contacting Dell
To contact Dell for sales, technical support, or customer service issues, see www.dell.com/contactdell.
NOTE: Availability varies by country/region and product, and some services may not be available in your country/region.
NOTE: If you do not have an active Internet connection, you can find contact information about your purchase invoice,
packing slip, bill, or Dell product catalog.
24 Getting help and contacting Dell
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