Dimensions and weight
The following table lists the height, width, depth, and weight of your Inspiron 3891.
| Description | Values | |
|---|---|---|
| Height: | ||
| Front height |
324.30 mm (12.77 in.) |
|
| Rear height |
324.30 mm (12.77 in.) |
|
| Width |
154 mm (6.06 in.) |
|
| Depth |
293 mm (11.54 in.) |
|
| Weight
NOTE:The weight of your computer depends on the configuration that is ordered and manufacturing variability.
|
7.02 kg (15.47 lb) |
|
Processors
The following table lists the details of the processors supported by your Inspiron 3891.
| Processors | Wattage | Core count | Thread count | Speed | Cache |
|---|---|---|---|---|---|
10th Generation Intel Core i3-10105 |
65 W |
4 |
8 |
Up to 4.4 GHz |
6 MB |
10th Generation Intel Core i5-10400 |
65 W |
6 |
12 |
Up to 4.3 GHz |
12 MB |
10th Generation Intel Core i5-10400F |
65 W |
6 |
12 |
Up to 4.3 GHz |
12 MB |
10th Generation Intel Core i5-10700 |
65 W |
8 |
16 |
Up to 4.8 GHz |
16 MB |
10th Generation Intel Core i5-10700F |
65 W |
8 |
16 |
Up to 4.8 GHz |
16 MB |
11th Generation Intel Core i5-11400 |
65 W |
6 |
12 |
Up to 4.4 GHz |
12 MB |
11th Generation Intel Core i5-11400F |
65 W |
6 |
12 |
Up to 4.4 GHz |
12 MB |
11th Generation Intel Core i7-11700 |
65 W |
8 |
16 |
Up to 4.9 GHz |
16 MB |
11th Generation Intel Core i7-11700F |
65 W |
8 |
16 |
Up to 4.9 GHz |
16 MB |
Intel Pentium Gold G6405 |
58 W |
2 |
4 |
Up to 4.1 GHz |
4 MB |
Intel Celeron G5905 |
58 W |
2 |
2 |
Up to 3.5 GHz |
4 MB |
Chipset
The following table lists the details of the chipset that is supported for your Inspiron 3891.
| Description | Option one | Option two | Option three |
|---|---|---|---|
| Processors |
10th Generation Intel Core i3/i5/i7 |
11th Generation Intel Core i5/i7 |
Intel Pentium/Celeron |
| Chipset |
Intel B560 |
Intel B560 |
Intel B560 |
| DRAM bus width |
64-bit |
64-bit |
64-bit |
| Flash EPROM |
32 MB |
32 MB |
32 MB |
| PCIe bus |
Up to Gen3 |
Up to Gen3 |
Up to Gen3 |
Operating system
Your Inspiron 3891 supports the following operating systems:
- Windows 11 Home, 64-bit
- Windows 11 Home in S-mode, 64-bit
- Windows 11 Pro, 64-bit
- Windows 10 Home, 64-bit
- Windows 10 Pro, 64-bit
- Ubuntu 20.04 LTS, 64-bit
Memory
The following table lists the memory specifications of your Inspiron 3891.
| Description | Values |
|---|---|
| Memory slots |
Two UDIMM slots |
| Memory type |
DDR4 |
| Memory speed |
2933 MHz, 2666 MHz
NOTE:2933 MHz speed memory modules are only available for computers that are shipped with 11th Generation Intel Core i5/i5F/i7/i7F processors.
|
| Maximum memory configuration |
64 GB |
| Minimum memory configuration |
4 GB |
| Memory size per slot |
4 GB, 8 GB, 12 GB, 16 GB, 32 GB |
| Memory configurations supported |
|
External ports
The following table lists the external ports of your Inspiron 3891.
| Description | Values |
|---|---|
| Network port |
One RJ-45 port |
| USB ports |
|
| Audio port |
One global headset jack (front) and Line-out audio port (rear) |
| Video port |
One HDMI 1.4b port and one VGA port
NOTE:The access to these ports is blocked for computers that are shipped with 11th Generation Intel Core i5-11400F and 11th Generation Intel Core i7-11700F processors.
|
| Media-card reader |
Supported, optional |
| Security |
One Kensington lock slot and one padlock loop |
Internal slots
The following table lists the internal slots of your Inspiron 3891.
| Description | Values |
|---|---|
| PCIe |
One full-height Gen 3 PCIe x16 slot and One full-height Gen 3 PCIe x1 slot |
| SATA |
One SATA 2.0 slot for slim optical drive and two SATA 3.0 slots for 3.5-inch/2.5-inch hard drive |
| M.2 |
NOTE:To learn more about the features of different types of M.2 cards, see the knowledge base article
000144170.
|
Ethernet
The following table lists the wired Ethernet Local Area Network (LAN) specifications of your Inspiron 3891.
| Description | Values |
|---|---|
| Model number |
Realtek RTL8111HSD |
| Transfer rate |
10/100/1000 Mbps |
Wireless module
The following table lists the Wireless Local Area Network (WLAN) module specifications of your Inspiron 3891.
| Description | Option one | Option two | Option three |
|---|---|---|---|
| Model number |
Qualcomm QCA61x4A |
Qualcomm QCA9377 |
Intel AX201 |
| Transfer rate |
Up to 867 Mbps |
Up to 433 Mbps |
Up to 2400 Mbps |
| Frequency bands supported |
2.4 GHz/5 GHz |
2.4 GHz/5 GHz |
2.4 GHz/5 GHz |
| Wireless standards |
|
|
|
| Encryption |
|
|
|
| Bluetooth wireless card |
Bluetooth 5.0 |
Bluetooth 5.0 |
Bluetooth 5.1 |
|
NOTE:The version of the Bluetooth wireless card may vary depending on the operating system that is installed on your computer.
|
|||
Audio
The following table lists the audio specifications of your Inspiron 3891.
| Description | Values | |
|---|---|---|
| Audio controller |
C-media CM6548 |
|
| Stereo conversion |
Supported |
|
| Internal audio interface |
USB 2.0 |
|
| External audio interface |
Global headset jack and Line-out audio port |
|
Storage
This section lists the storage options on your Inspiron 3891.
- One 3.5-inch hard-disk drive
- One M.2 2230/2280 solid-state drive
- One M.2 2230/2280 solid-state drive + One 3.5-inch hard-disk drive
- with a solid-state drive, the solid-state drive is the primary drive
- without a solid-state drive, the hard-disk drive is the primary drive
| Storage type | Interface type | Capacity |
|---|---|---|
|
3.5-inch SATA hard drive |
SATA AHCI, up to 6 Gbps |
Up to 2 TB |
|
M.2 2230, PCIe NVMe, solid-state drive |
PCIe Gen 3 NVMe, up to 32 Gbps |
Up to 512 GB |
|
Slim optical drive, optional |
SATA AHCI, up to 1.5 Gbps |
N/A |
Media-card reader
The following table lists the media cards that are supported on your Inspiron 3891.
| Description | Values |
|---|---|
| Media-card type |
SD-card slot |
| Media-cards supported |
|
|
NOTE:The maximum capacity supported by the media-card reader varies depending on the standard of the media card that is installed on your computer.
|
|
Power supply
The following table lists the power supply specifications of your Inspiron 3891.
| Description | Option 1 | Option 2 | |
|---|---|---|---|
| Type |
260 W Bronze |
360 W Bronze |
|
| Input voltage |
90 VAC–264 VAC |
90 VAC–264 VAC |
|
| Input frequency |
47 Hz–63 Hz |
47 Hz–63 Hz |
|
| Input current (maximum) |
4.20 A |
5 A |
|
| Output current (continuous) |
16.50 A |
18 A |
|
| Rated output voltage |
12 VDC |
12 VDC |
|
| Temperature range: | |||
| Operating |
5°C to 45°C (41°F to 113°F) |
5°C to 45°C (41°F to 113°F) |
|
| Storage |
-40°C to 70°C (-40°F to 158°F) |
-40°C to 70°C (-40°F to 158°F) |
|
GPU—Integrated
The following table lists the specifications of the integrated Graphics Processing Unit (GPU) supported by your Inspiron 3891.
| Controller | External display support | Memory size | Processor |
|---|---|---|---|
|
Intel HD Graphics |
One HDMI 1.4b port and one VGA port
NOTE:The access to these ports is blocked for computers that are shipped with 11th Generation Intel Core i5-11400F and 11th Generation Intel Core i7-11700F processors.
|
Shared memory |
11th Generation Intel Core i5/i7 |
|
Intel HD Graphics |
One HDMI 1.4b port and one VGA port |
Shared memory |
10th Generation Intel Core i3 |
|
Intel HD Graphics |
One HDMI 1.4b port and one VGA port |
Shared memory |
Intel Pentium/Celeron |
GPU—Discrete
The following table lists the specifications of the discrete Graphics Processing Unit (GPU) supported by your Inspiron 3891.
| Controller | External display support | Memory size | Memory type |
|---|---|---|---|
|
NVIDIA GeForce GTX 1660 Super |
|
6 GB |
GDDR6 |
|
NVIDIA GeForce GTX 1650 Super |
|
4 GB |
GDDR6 |
|
NVIDIA GeForce GT 1030 |
|
2 GB |
GDDR5 |
|
NVIDIA GeForce GT 730 |
|
2 GB |
GDDR5 |
Operating and storage environment
This table lists the operating and storage specifications of your Inspiron 3891.
Airborne contaminant level: G1 as defined by ISA-S71.04-1985
| Description | Operating | Storage |
|---|---|---|
| Temperature range |
10°C to 35°C (50°F to 95°F) |
-40°C to 65°C (-40°F to 149°F) |
| Relative humidity (maximum) |
20% 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 10000 ft) |
-15.2 m to 10668 m (-49.87 ft to 35000 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.




























