Acer Extensa 2900D - Manual (Page 15)

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# Item Description
1 Infrared port Interfaces with infrared devices (e.g.,
infrared printer, IR-aware computer).
2 PC Card slot Accepts one Type II 16-bit PC Card or 32-
bit CardBus PC Card.
3 Wireless Communication
switch Enables and disables Wireless
communication devices.
4 Stereo speaker Outputs sound.
5 Headphone/ Speaker/
Line-out jack Connects to headphones or other line-
out audio devices (speakers).
6 Microphone/line-in jack Accepts input from external
microphones, or other audio line-in
devices (e.g. audio CD player, stereo
walkman and etc.)