System Board - Lenovo ThinkCentre M725s User Manual And Hardware Maintenance Manual

14 PCI-Express card area
To improve the operating performance of the computer, you can connect PCI-Express cards into this area.
Depending on the computer model, the connectors in this area vary.
15 Smart cable clip slots
Used to secure a smart cable clip.
16 Power cord connector
Used to connect the power cord to your computer for power supply.

System board

Note: See "Front view" and "Rear view" for additional component descriptions.
Figure 3. System board
1
4-pin power connector
3
Internal speaker connector
5
Power button board connector
7
10-pin power connector
9
SATA 3.0 connectors (3)
11
Illuminated red dot connector
13
M.2 solid-state drive slot
15
Front USB 2.0 connector
2
Microprocessor fan connector
4
Storage drive activity indicator
6
SATA power connectors (2)
8
Clear CMOS /Recovery jumper
10
Auxiliary fan connector 1
12
Thermal sensor connector
14
Front USB 2.0 connector (card reader connector)
16
Parallel connector
. 5
Chapter 1 Overview