Lenovo 10111/4725 Maintenance Manual page 32

Identifying parts on the motherboard
The motherboard (sometimes called the planar or system board) is the main circuit board in your computer.
It provides basic computing functions and supports a variety of devices that are factory-installed or that
you can install later. The following illustration shows the location of connectors and components on the
front of the motherboard.
1. Microprocessor and heat sink
2. Microprocessor fan header
3. Memory slots (2)
4. Power connector
5. Thermal sensor header
6. Front panel connector
7. Battery
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Lenovo H505/520/535Hardware Maintenance Manual
8. SATA connectors (2)
9. Mini PCI-E slot
10. Front USB connectors (2)
11. Clear CMOS jumper
12. PCI express ×1 adapter slot
13. Front audio connector