Dell Inspiron 3781: характеристики и спецификации

Dimensions and weight

Table 1. Dimensions and weight
The following table provides the detailed display specifications of Inspiron 3781.
Description		Values
Height:
	Front	21.86 mm (0.86 in.)
	Rear	25.60 mm (1.01 in.)
Width		415.40 mm (16.35 in.)
Depth		279.20 mm (10.99 in.)
Weight (maximum)		3.03 kg (6.68 lb) NOTE The weight of your computer depends on the configuration ordered and the manufacturing variability.

Processors

Table 1. Processors
The following table provides the various processor options supported for Inspiron 3781.
Description	Values
Processors	Intel Celeron Processor	Intel Pentium Gold	7^th Generation Intel Core i3	7^th Generation Intel Core i5	7^th 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
Integrated graphics	Intel HD Graphics 610	Intel HD Graphics 610	Intel HD Graphics 620	Intel HD Graphics 620	Intel HD Graphics 620

Chipset

Table 1. Chipset
The following table provides the chipset specifications for Inspiron 3781.
Description	Values
Processor	Intel Celeron Processor Intel Pentium Gold	7^th Generation Intel Core i3/i5/i7
Chipset	Integrated in the processor	Integrated in the processor
DRAM bus width	64-bit	64-bit
Flash EPROM	16 MB	16 MB
PCIe bus	Up to Gen2.0	Up to Gen3.0
External bus frequency	4 GT/s	4 GT/s

Operating system

Your Inspiron 3781 supports the following operating systems:

Windows 10 Home (64-bit)
Windows 10 Professional (64-bit)
Ubuntu

Memory

The following table lists the memory specifications of your Inspiron 3781:

Table 1. 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 at 2133 MHz (1 x 8 GB + 1 x 4 GB) 16 GB DDR4 at 2133 MHz (2 x 8 GB) 16 GB DDR4 at 2133 MHz (1 x 16 GB)

Ports and connectors

Table 1. External ports and connectors
The following table lists ports and connectors available on Inspiron 3781.
Description	Values
External:
Network	One RJ-45 port
USB	Two USB 3.1 Gen 1 ports One USB 2.0 port
Audio	One headset (headphone and microphone combo) port
Video	One HDMI 1.4b port
Media card reader	One SD-card slot
Docking port	Not supported
Power adapter port	One 4.5 mm x 2.9 mm DC in
Security	One security-cable slot (wedge-shaped)

Table 2. Internal ports and connectors
The following table lists ports and connectors available on Inspiron 3781.
Description	Values
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 1. Ethernet specifications
The following table provides the Ethernet specifications of Inspiron 3781.
Description	Values
Model number	Ethernet controller integrated to the system board
Transfer rate	10/100 Mbps

Wireless module

Table 2. Wireless module specifications
The following table provides the wireless module specifications of Inspiron 3781.
Description	Values
Model number	Qualcomm QCA9565 (DW1707)	Qualcomm QCA9377 (DW1810)	Qualcomm QCA61x4A (DW1820)
Transfer rate	Up to 150 Mbps	Up to 433 Mbps	Up to 867 Mbps
Frequency bands supported	Dual band 2.4 GHz	Dual band 2.4 GHz/5 GHz	Dual band 2.4 GHz/5 GHz
Wireless standards	WiFi 802.11b/g/n	WiFi 802.11a/b/g/n/ac	WiFi 802.11a/b/g/n/ac
Encryption	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 1. Audio specifications
The following table provides the detailed audio specifications of Inspiron 3781.
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 speaker amplifier		Supported
External volume controls		Keyboard shortcuts
Speaker output:
	Average	2 W
	Peak	2.5 W
Subwoofer output		Not supported
Microphone		Supported

Storage

Table 1. Storage specifications
The following table provides the different storage options available on your computer.
Storage type	Interface type	Capacity
One 2.5-inch hard drive	SATA AHCI, up to 6 Gbps	500 GB (5400 RPM/7200 RPM) 1 TB (5400 RPM/7200 RPM) 2 TB (5400 RPM)
One M.2 2280 solid-state drive	PCIe Gen3.0x4 NVMe, up to 32 Gbps for 7^th Generation Intel Core i3/i5/i7 processors PCIe Gen2.0x4, up to 16 Gbps for Intel Celeron and Pentium Gold processors	Up to 256 GB
Optical drive	9.5 mm DVD-RW	One slimline DVD-RW

Media-card reader

Table 1. Media-card reader specifications
The following table provides the media-card specifications of Inspiron 3781.
Description	Values
Type	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:

7^th Generation or higher Intel Core i3/i5/i7 processor
Windows 10 64-bit version or higher (Anniversary Update)
Latest version of Intel Rapid Storage Technology driver

Table 1. Intel Optane memory
The following table provides the Intel Optane memory information for Inspiron 3781.
Description	Values
Type	Storage accelerator
Interface	PCIe 3.0x2
Connector	M.2 2280
Configurations supported	16 GB
Capacity	Up to 16 GB

Keyboard

Table 1. Keyboard specifications
The following table provides the detailed keyboard specifications of Inspiron 3781.
Description	Values
Type	Standard keyboard Backlit keyboard (optional)
Layout	QWERTY
Number of keys	United States and Canada: 101 keys United Kingdom: 102 keys Japan: 105 keys
Size	X = 19.05 mm key pitch Y = 18.05 mm key pitch
Shortcut keys	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) by changing Function Key Behavior in BIOS setup program. Keyboard shortcuts

Camera

Table 1. Camera specifications
The following table provides the detailed camera specifications of Inspiron 3781.
Description		Values
Number of cameras		One
Type		HD RGB camera
Location		Front (above the LCD screen)
Sensor type		CMOS sensor technology
Resolution:
	Still image	0.92 megapixel
	Video	1280 x 720 (HD) at 30 fps
Diagonal viewing angle		78.6 degrees

Touchpad

Table 1. Touchpad specifications
The following table provides the detailed touchpad specifications of Inspiron 3781.
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, see the Microsoft knowledge base article 4027871 at support.microsoft.com.

Power adapter

Table 1. Power adapter specifications
The following table provides the detailed power adapter specifications of Inspiron 3781.
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)

Battery

Table 1. Battery specifications
The following table provides the detailed battery specifications of Inspiron 3781.
Description		Values
Type		3-cell "smart" lithium-ion (42 WHr)
Voltage		11.40 VDC
Weight (maximum)		0.20 kg (0.44 lb)
Dimensions:
	Height	5.90 mm (0.23 in.)
	Width	184.15 mm (7.25 in.)
	Depth	90.73 mm (3.57 in.)
Temperature range:
	Operating	0°C to 35°C (32°F to 95°F)
	Storage	–40°C to 65°C (–40°F to 149°F)
Operating time		Varies depending on operating conditions and can reduce under certain power-intensive conditions
Charging time (approximate)		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 Me and My Dell on https://www.dell.com/.
Coin-cell battery		CR-2032
Operating time		Varies depending on operating conditions and can reduce under certain power-intensive conditions

Display

Table 1. Display specifications
The following table provides the detailed display specifications of Inspiron 3781.
Description		Values
Type		High Definition Plus (HD+)	Full High Definition (FHD)
Panel technology		Twisted Nematic (TN)	Wide Viewing Angle (WVA)
Luminance (typical)		220 nits	300 nits
Dimensions (Active area):
	Height	214.92 mm (8.46 in.)	214.81 mm (8.46 in.)
	Width	382.08 mm (15.04 in.)	381.89 mm (15.04 in.)
	Diagonal	438.38 mm (17.26 in.)	438.16 mm (17.25 in.)
Native resolution		1600 x 900 (HD+)	1920 x 1080 (FHD)
Megapixels		1.44	2.07
Pixels per inch (PPI)		106	127
Contrast ratio (min)		400:1	500:1
Response time (max)		16 ms	35 ms
Refresh rate		60 Hz	60 Hz
Horizontal view angle		Left: 40 degrees Right: 40 degrees	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)

The following table lists the specifications of the optional fingerprint-reader.

Table 1. Fingerprint reader specificationsThe following table lists the specifications of the optional fingerprint-reader.
Description	Values
Sensor technology	Capacitive
Sensor resolution	500 PPI
Sensor area	5.50 mm x 4.50 mm (0.22 in. x 0.17 in.)
Sensor pixel size	108 pixels x 88 pixels

Video

Table 1. Video specificationsThe following table provides the discrete graphics specifications of your computer.
Discrete graphics
Controller	External display support	Memory size	Memory Type
AMD Radeon 520	One HDMI 1.4b port	2 GB	GDDR5

Table 2. Video specificationsThe following table provides the integrated graphics specifications of your computer.
Integrated graphics
Controller	External display support	Memory size	Processor
Intel HD Graphics 610	One HDMI 1.4b port	Shared system memory	Intel Celeron processor Intel Pentium Gold
Intel HD Graphics 620	One HDMI 1.4b port	Shared system memory	7^th Generation Intel Core i3/i5/i7

Computer environment

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 Inspiron 3781.
Description	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 ft to 35,000 ft)

^{* 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.}

Dell Inspiron 3781: технические характеристики и спецификации