Lenovo M5800 Desktop - Manual (Page 72)

1 4-pin power connector 15 Front panel connector (for connecting LED indicators and
the power switch)
2 Microprocessor 16 Front USB connector 1 (for connecting USB ports 1 and 2
on the front bezel)
3 Microprocessor fan connector 17 Front USB connector 2 (for connecting additional USB
devices)
4 Memory slot 1 (DIMM 1) 18 Clear CMOS (Complementary Metal Oxide
Semiconductor)/Recovery jumper
5 Memory slot 2 (DIMM 2) 19 Serial (COM2) connector
6 Memory slot 3 (DIMM 3) 20 Internal speaker connector
7 Memory slot 4 (DIMM 4) 21 Front audio connector
8 Thermal sensor connector 22 PCI card slots (2)
9 4-pin power connectors (2) 23 PCI Express x1 card slot
10 14-pin power connector 24 PCI Express x16 graphics card slot
11 Battery 25 Cover presence switch connector (Intrusion switch
connector)
12 SATA 3.0 connectors (4) 26 System fan connector
13 Power fan connector 27 PS/2 keyboard and mouse connector
14 Parallel 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.
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.
66 Lenovo M5800 Hardware Maintenance Manual