Dell Latitude E6220 (Mid 2011) - Manual (Page 90)

Audio
Type four-channel high definition audio
Controller IDT 92HD90
Stereo conversion 24-bit (analog-to-digital and digital-to-analog)
Interface:
Internal high definition audio
External microphone-in/stereo headphones/external
speakers connector
Speakers two
Internal speaker amplifier 2 W (typical) per channel
Volume controls keyboard function keys, program menus
Video
Video type integrated on system board
Data bus integrated video
Video controller Intel HD Graphics 3000
Video memory 512 MB
Communications
Network adapter 10/100/1000 Mbps Ethernet LAN
Wireless internal wireless local area network (WLAN)
and wireless wide area network (WWAN)
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