Table 9. Wireless module specifications(continued)
Description Option one Option two Option three
Wireless standards
● Wi-Fi 802.11a/b/g
● Wi-Fi 4 (WiFi 802.11n)
● Wi-Fi 5 (WiFi 802.11ac)
● Wi-Fi 6 (WiFi 802.11ax)
● Wi-Fi 802.11a/b/g
● Wi-Fi 4 (WiFi 802.11n)
● Wi-Fi 5 (WiFi 802.11ac)
● Wi-Fi 6E (WiFi 802.11ax)
● Wi-Fi 802.11a/b/g
● Wi-Fi 4 (WiFi 802.11n)
● Wi-Fi 5 (WiFi 802.11ac)
● Wi-Fi 6 (WiFi 802.11ax)
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 wireless card
Bluetooth 5.2 Bluetooth 5.3 Bluetooth 5.3
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 OptiPlex All-in-One 7420.
Table 10. Audio specifications
Description Values
Audio controller
● Realtek ALC3246, only for computers shipped with an
Energy Efficient processor
● Realtek ALC3289, only for computers shipped with a High
Performance processor
Stereo conversion
Supported
Internal audio interface
High-definition audio interface
External audio interface
● One universal audio port
● One audio line-out port, retaskable
Number of speakers
Two stereo speakers
Internal-speaker amplifier
● Supported for computers shipped with an Energy Efficient
processor
● Realtek Amplifier ALC1302, only for computers shipped
with a High Performance processor
External volume controls
Not supported
Speaker output:
Average speaker output
2 W
Peak speaker output
2.5 W
Subwoofer output
Not supported
Microphone
Two microphones in the retractable-camera assembly
20 Specifications of OptiPlex All-in-One 7420
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