your computer has the following input/output (i/o) connectors:
1 one audio line in (rear of computer)
2 two audio line out (front and rear of computer)
3 two audio microphone (front and rear of computer)
4 one ethernet (rj-45)
5 two ieee 1394 (firewire) (some models)
6 one keyboard
7 one mouse
8 one parallel
9 two serial
10 one ultra320 scsi (some models)
11 four universal serial bus (usb) v2.0 ports
12 one video
the following illustration shows the locations of these connectors.
the following sections describe these connectors.