Acer 5600 series - Manual (Page 21)

15
Note: The system has two microphone-in jacks (front and rear).
However, you can not use both of them at the same time. By
default, your system enables the microphone-in jack in front and
disables the one at the back.
11 Optical drive emergency eject hole
12 Optical drive LED
13 Volume control
14 5.25-inch drive bay
15 Headphone/Earphone port
16 Front microphone-in port (see Note)
17 USB ports
Label Icon Description