Lenovo 3122, 3120, 3128, 3126 manual Locating internal drives, System board part locations

Figure 4. System board part locations

1Microprocessor

2Microprocessor fan connector

3Memory slots (4)

4Thermal sensor connector

524-pin power connector

6Battery

7Clear CMOS (Complementary Metal Oxide Semiconductor) /Recovery jumper

8SATA connectors (4)

9Front panel connector

10Front USB connector

11Cover presence switch connector (also called intrusion switch connector)

12Front USB connector

13Serial (COM 2) connector

14PCI card slot

15Power fan connector

16Internal speaker connector

17Front audio connector

18PCI Express x1 card slots (2)

19PCI Express x16 graphics card slot

20System fan connector

214-pin power connector

Locating internal drives

Internal drives are devices that your computer uses to read and store data. You can add drives to your computer to increase storage capacity and enable your computer to read other types of media. Internal drives are installed in bays. In this manual, the bays are referred to as bay 1, bay 2, and so on. Your computer comes with the following factory-installed drives:

•An optical drive in bay 1

•A 3.5-inch hard disk drive in bay 3

When installing or replacing an internal drive, it is important to note the type and size of the drive that you can install or replace in each bay and correctly connect the cables to the drive installed. Refer to the

Chapter 1. Product overview 11