Lenovo H505s Desktop User Manual
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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.
Lenovo H505s
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1. Microprocessor and heat sink
8. SATA connectors (2)
2. Microprocessor fan header
9. Mini PCI-E slot
3. Memory slots (2)
10. Front USB connectors (2)
4. Power connector
11. Clear CMOS jumper
5. Thermal sensor header
12. PCI express X 1 adapter slot
6. Front panel connector
13. Front audio connector
7. Battery
Chapter 7
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Locating connectors, controls and components
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