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Wireless module
Table 8. Wireless module specifications
Description
Model number
Transfer rate
Frequency bands supported
Wireless standards
Encryption
Bluetooth
Audio
Table 9. Audio specifications
Description
Controller
Stereo conversion
Internal interface
External interface
Speakers
Internal speaker amplifier
External volume controls
Speaker output:
Average
Peak
Subwoofer output
Microphone
14
Specifications of Inspiron 3781
Qualcomm QCA9565 (DW1707)
Up to 150 Mbps
Dual band 2.4 GHz
WiFi 802.11b/g/n
•
64-bit/128-bit WEP
•
AES-CCMP
•
TKIP
Bluetooth 4.0
Values
Qualcomm QCA9377 (DW1810)
Up to 433 Mbps
Dual band 2.4 GHz/5 GHz
WiFi 802.11a/b/g/n/ac
•
64-bit/128-bit WEP
•
AES-CCMP
•
TKIP
Bluetooth 4.2
Values
Realtek ALC3246
Supported
High-definition audio
Headset combo jack (stereo headphones/microphone-in)
Two
Supported
Keyboard shortcuts
2 W
2.5 W
Not supported
Supported
Qualcomm QCA61x4A (DW1820)
Up to 867 Mbps
Dual band 2.4 GHz/5 GHz
WiFi 802.11a/b/g/n/ac
•
64-bit/128-bit WEP
•
AES-CCMP
•
TKIP
Bluetooth 4.2
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