Dell Inspiron 3521 - External Ports; Internal Slots; Wireless Module

External ports
The following table lists the external ports on your Inspiron 15 3521.
Table 7. External ports
Description Values
USB ports
● Two USB 3.2 Gen 1 ports
● One USB 2.0 port
Audio port
One headset (headphone and microphone combo) port
Video port/ports
● One HDMI 1.4 port
Media-card reader
One SD-card slot
Power-adapter port
One DC-in port (4.5 mm standard plug)
Security-cable slot
N/A
Internal slots
The following table lists the internal slots of your Inspiron 15 3521.
Table 8. Internal slots
Description Values
M.2
● One M.2 2230 Key-E slot for WLAN
● One M.2 2230/2280 slot for solid-state drive
NOTE: To learn more about the features of different
types of M.2 cards, see the knowledge base article
000144170 at www.dell.com/support.
Wireless module
The following table lists the Wireless Local Area Network (WLAN) modules supported on your Inspiron 15 3521.
Table 9. Wireless module specifications
Description Option one Option two
Model number
Intel 9462 Realtek RTL8821CE
Transfer rate
Up to 433 Mbps Up to 433 Mbps
Frequency bands supported
2.40 GHz/5 GHz 2.40 GHz/5 GHz
Wireless standards
● WiFi 802.11a/b/g
● Wi-Fi 4 (WiFi 802.11n)
● Wi-Fi 5 (WiFi 802.11ac)
● WiFi 802.11a/b/g
● Wi-Fi 4 (WiFi 802.11n)
● Wi-Fi 5 (WiFi 802.11ac)
Encryption
● 64-bit/128-bit WEP
● AES-CCMP
● TKIP
● 64-bit/128-bit WEP
● AES-CCMP
● TKIP
Specifications of Inspiron 15 3521 13