Lenovo H5S manual Identifying parts on the system board

4.1.2 Identifying parts on the system board

The system board (sometimes called the planar or motherboard) is the main circuit board in your computer. It provides basic computer functions and supports a variety of devices that are factory-installed or that you can install later.

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12V power connector									Microprocessor and heat sink
Microprocessor fan header									Memory slots (2)
Thermal sensor header									Power connector
Battery									SATA connectors (3)
eSATA connector									Power fan header
Front panel connector									Clear CMOS jumper
Front USB connectors (2)									Mini PCI-E slot
Mode switch connector									Serial (COM2) connector

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