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Touchpad

Table 15. Touchpad specifications

Description

Values

Resolution:

Horizontal

3215

Vertical

2429

Dimensions:

Horizontal

105 mm (4.13 in.)

Vertical

80 mm (3.15 in.)

Touchpad gestures

For more information about touchpad gestures for Windows 10, see the Microsoft knowledge base article 

4027871

 at 

support.microsoft.com

.

Power adapter

Table 16. Power adapter specifications

Description

Values

Type

E4 45 W

E4 65 W

Diameter (connector)

4.5 mm x 2.9 mm

4.5 mm x 2.9 mm

Input voltage

100 VAC–240 VAC

100 VAC–240 VAC

Input frequency

50 Hz–60 Hz

50 Hz–60 Hz

Input current (maximum)

1.30 A

1.60 A/1.70 A

Output current (continuous)

2.31 A

3.34 A

Rated output voltage

19.50 VDC

19.50 VDC

Temperature range:

Operating

0°C to 40°C (32°F to 104°F)

0°C to 40°C (32°F to 104°F)

Storage

–40°C to 70°C (–40°F to 158°F)

–40°C to 70°C (–40°F to 158°F)

Specifications of Inspiron 3781

17

Summary of Contents for Inspiron 3781

Page 1: ...Inspiron 3781 Setup and Specifications Regulatory Model P35E Regulatory Type P35E001 ...

Page 2: ...amage 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 2018 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 2018 12 Rev A00 ...

Page 3: ...ating system 12 Memory 12 Ports and connectors 13 Communications 13 Ethernet 13 Wireless module 14 Audio 14 Storage 15 Media card reader 15 Intel Optane memory optional 15 Keyboard 16 Camera 16 Touchpad 17 Touchpad gestures 17 Power adapter 17 Battery 18 Display 18 Fingerprint reader optional 19 Video 20 Computer environment 20 5 Keyboard shortcuts 21 6 Getting help and contacting Dell 23 Self hel...

Page 4: ...ntu see the knowledge base articles SLN151664 and SLN151748 at www dell com support For Windows 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 ...

Page 5: ... 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...

Page 6: ... your computer 2 In Windows search type Recovery 3 In the search results click Create a recovery drive The User Account Control window is displayed 4 Click Yes to continue The Recovery Drive window is displayed 5 Select Back up system files to the recovery drive and click Next 6 Select the USB flash drive and click Next A message appears indicating that all data in the USB flash drive will be dele...

Page 7: ...able slot wedge shaped Connect a security cable to prevent unauthorized movement of your computer Left 1 Power adapter port Connect a power adapter to provide power to your computer 2 HDMI port Connect to a TV or another HDMI in enabled device Provides video and audio output 3 Network port Connect an Ethernet RJ45 cable from a router or a broadband modem for network or Internet access 4 USB 3 1 Ge...

Page 8: ...gerprint 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 4 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...

Page 9: ...hotos and record videos 2 Camera status light Turns on when the camera is in use 3 Microphone Provides digital sound input for audio recording voice calls and so on Bottom 1 Left speaker Provides audio output 2 Service Tag label Views of Inspiron 3781 9 ...

Page 10: ... 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 10 Views of Inspiron 3781 ...

Page 11: ...rs Description Values Processors Intel Celeron Processor Intel Pentium Gold 7th Generation Intel Core i3 7th Generation Intel Core i5 7th Generation Intel Core i7 Wattage 15 W 15 W 15 W 15 W 15 W Core count 2 4 2 2 2 Thread count 4 8 4 4 4 Speed Up to 1 8 GHz Up to 2 2 GHz Up to 2 3 GHz Up to 3 1 GHz Up to 3 5 GHz L2 Cache 512 KB 512 KB 512 KB 512 KB 512 KB L3 Cache 2 MB 2 MB 3 MB 3 MB 4 MB Integr...

Page 12: ...g system Windows 10 Home 64 bit Windows 10 Professional 64 bit Ubuntu Memory Table 5 Memory specifications Description Values Slots Two SODIMM slots Type Dual channel DDR4 Speed Up to 2133 MHz Maximum memory 16 GB Minimum memory 4 GB Memory size per slot 4 GB 8 GB 16 GB Configurations supported 4 GB DDR4 at 2133 MHz 1 x 4 GB 8 GB DDR4 at 2133 MHz 2 x 4 GB 8 GB DDR4 at 2133 MHz 1 x 8 GB 12 GB DDR4 ...

Page 13: ... 5 mm x 2 9 mm DC in Security One security cable slot wedge shaped Internal M 2 One M 2 slot for Wi Fi and Bluetooth combo card One M 2 2280 slot for solid state drive or Intel Optane NOTE To learn more about the features of different types of M 2 cards see the knowledge base article SLN301626 Communications Ethernet Table 7 Ethernet specifications Description Values Model number Ethernet controll...

Page 14: ...yption 64 bit 128 bit WEP AES CCMP TKIP 64 bit 128 bit WEP AES CCMP TKIP 64 bit 128 bit WEP AES CCMP TKIP Bluetooth Bluetooth 4 0 Bluetooth 4 2 Bluetooth 4 2 Audio Table 9 Audio specifications Description Values Controller Realtek ALC3246 Stereo conversion Supported Internal interface High definition audio External interface Headset combo jack stereo headphones microphone in Speakers Two Internal ...

Page 15: ... One SD card slot Cards supported Secure Digital SD Secure Digital High Capacity SDHC Secure Digital Extended Capacity SDXC Intel Optane memory optional Intel Optane memory functions only as a storage accelerator It neither replaces nor adds to the memory RAM installed on your computer NOTE Intel Optane memory is supported on computers that meet the following requirements 7th Generation or higher ...

Page 16: ...ters 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 by changing Function Key Behavior in BIOS setup program Keyboard shortcuts Camera Table 14 Camera specifications Description Values Number of cameras One Type HD RGB ca...

Page 17: ...dapter Table 16 Power adapter specifications Description Values Type E4 45 W E4 65 W Diameter connector 4 5 mm x 2 9 mm 4 5 mm x 2 9 mm Input voltage 100 VAC 240 VAC 100 VAC 240 VAC Input frequency 50 Hz 60 Hz 50 Hz 60 Hz Input current maximum 1 30 A 1 60 A 1 70 A Output current continuous 2 31 A 3 34 A Rated output voltage 19 50 VDC 19 50 VDC Temperature range Operating 0 C to 40 C 32 F to 104 F ...

Page 18: ... 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 Me and My Dell on https www dell com Life span approximate 300 discharge charge cycles Coin cell battery CR 2032 Operating time Varies depending on operating conditions and can significantly reduce under certain power intensive conditions Disp...

Page 19: ... Left 80 degrees Right 80 degrees Vertical view angle Top 10 degrees Bottom 30 degrees Top 80 degrees Bottom 80 degrees Pixel pitch 0 2388 mm 0 1989 mm Power consumption maximum 4 4 W 8 W Anti glare vs glossy finish Anti glare Anti glare Touch options Not supported Not supported Fingerprint reader optional Table 19 Fingerprint reader specifications Description Values Sensor technology Capacitive S...

Page 20: ...er environment Airborne contaminant level G1 as defined by ISA S71 04 1985 Table 22 Computer environment Operating Storage Temperature range 0 C to 40 C 32 F to 104 F 40 C to 65 C 40 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 140 G 160 G Altitude maximum 0 m to 3 048 m 0 ft to 10 000 ft 0 m to 10 668 m 0 f...

Page 21: ...n 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 Yo...

Page 22: ...key Behavior Turn off on wireless Pause Break Sleep Toggle scroll lock Toggle between power and battery status light hard drive activity light System request Open application menu Toggle Fn key lock Page up Page down Home End 22 Keyboard shortcuts ...

Page 23: ...etrieve the related articles 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 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 fol...

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