Ports and connectors
Table 6. Ports and connectors
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)
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
.
Communications
Ethernet
Table 7. Ethernet specifications
Description
Values
Model number
Ethernet controller integrated to the system board
Transfer rate
10/100 Mbps
Specifications of Inspiron 3781
13
