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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.
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1. 12V power connector
11. Front panel connector
2. Microprocessor and heat sink
12. Clear CMOS jumper
3. Microprocessor fan header
13. Front USB connectors (2)
4. Memory slots (2)
14. Mini PCI-E slot
5. Thermal sensor header
15. Mode switch connector
6. Power connector
16. Serial (COM2) connector
7. Battery
17. PCI express X 1 adapter slots (3)
8. SATA connectors (3)
18. Front audio connector
9. eSATA connector
19. PCI express X 16 adapter slot
10. Power fan header
20. System fan header
Chapter 7
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Locating connectors, controls and components
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