Lenovo 3128, 3120, 3122, 3126 manual Connector Description

Figure 2. Rear connector and part locations

1

2

3

4

5

6

7

8

9

Power cord connector

PS/2 keyboard connector

DVI monitor connector

VGA monitor connector

USB connectors (USB ports 3 to 6)

Microphone connector

Audio line-out connector

Audio line-in connector

PCI Express x16 graphics card slot

10

11

12

13

14

15

16

17

18

PCI Express x1 card slots (2)

PCI card slot

Optional serial port

Cable lock slots (2)

Ethernet connector Serial port

Integrated cable lock (Kingston lock) slot

Cover-release button

Serial port

PS/2 mouse connector

Connector	Description
Audio line-in connector	Used to receive audio signals from an external audio device, such as a stereo
	system. When you attach an external audio device, a cable is connected between
	the audio line-out connector of the device and the audio line-in connector of
	the computer.
Audio line-out connector	Used to send audio signals from the computer to external devices, such as
	powered stereo speakers (speakers with built-in amplifiers), headphones,
	multimedia keyboards, the audio line-in connector on a stereo system, or other
	external recording devices.
DVI monitor connector	Used to attach a DVI monitor or other devices that use a DVI monitor connector.
Ethernet connector	Used to attach an Ethernet cable for a local area network (LAN).
	Note: To operate the computer within FCC Class B limits, use a Category 5
	Ethernet cable.

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