Acer Extensa 2900D - Manual (Page 16)

Getting familiar with your computer 6
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Right view
7 One USB 2.0 port Connects to Universal Serial Bus devices
(e.g., USB mouse, USB camera).
# Item Description
1 Stereo speaker Outputs sound.
2 HDD Houses the computer's hard disk.
3 Ventilation slot Enables the computer to stay cool, even
after prolonged use.
4 DC-in jack Connects the AC adapter.
# Item Description