Lenovo H520e Desktop - Manual (Page 71)

Locating parts on the system board
Figure 4 “System board part locations” on page 67 shows the locations of the parts on the system board.
Figure 4. System board part locations
1 4-pin power connector 12 Clear CMOS (Complementary Metal Oxide Semiconductor)
/Recovery jumper
2 Microprocessor 13 Front USB connector 2 (for connecting additional USB
devices)
3 Microprocessor fan connector 14 Front USB connector 3 (for connecting additional USB
devices)
4 Memory slot 1 (DIMM1) 15 Battery
5 Memory slot 2 (DIMM2) 16 Serial (COM2) connector
6 Thermal sensor connector 17 Front audio connector
7 24-pin power connector 18 Internal speaker connector
8 Power fan connector 19 PCI Express x1 card slots (2)
9 SATA connectors (3) 20 PCI Express x16 graphics card slot
10 Front panel connector (for connecting LED
indicators and power switch)
21 System fan connector
11 Front USB connector 1 (for connecting USB
ports 1 and 2 on the front bezel)
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.
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
appropriate section in “Installing or replacing hardware” on page 69 for instructions on how to install or
replace internal drives for your computer.
Chapter 8 . Locations 67