Table 6. External ports (continued)
Description Values
● One USB 3.2 Gen 1 port with PowerShare
● One USB 3.2 Gen 1 port
Audio port
One Universal audio jack
Video port
One HDMI 2.0 port
Media-card reader
One smart card reader slot (optional)
Power-adapter port
Type-C adapter
Security-cable slot
One security-cable slot (wedge-shaped)
Internal slots
The following table lists the internal slots of your Precision 3581.
Table 7. Internal slots
Description Values
M.2
● One M.2 2230 slot for WiFi and Bluetooth combo card
● Two M.2 2230/2280 slot for solid-state drive
● One M.2 3042/3052 slot for WWAN (optional)
NOTE: To learn more about the features of different
types of M.2 cards, search in the Knowledge Base
Resource at www.dell.com/support.
Ethernet
The following table lists the wired Ethernet Local Area Network (LAN) specifications of your Precision 3581.
Table 8. Ethernet specifications
Description Values
Model number
Intel I219-LM
Transfer rate
10/100/1000 Mbps
Wireless module
The following table lists the Wireless Local Area Network (WLAN) modules supported on your Precision 3581.
Table 9. Wireless module specifications
Description Option one Option two
Model number
Realtek RTL8852BE Intel AX211
Transfer rate
Up to 1201 Mbps Up to 2400 Mbps
Frequency bands supported
2.4 GHz/5 GHz 2.4 GHz/5 GHz/6 GHz
14 Specifications of Precision 3581
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