Lenovo H520s Lenovo H520s Hardware Maintenance Manual - Page 31

Identifying parts on the motherboard

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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. 1 2 3 4 5 6 7 8 9 18 17 16 15 14 1. 12V power connector 2. Microprocessor and heat sink 3. Microprocessor fan header 4. Memory slots (2) 5. Thermal sensor header 6. Power connector 7. Battery 8. SATA connectors (3) 9. eSATA connector 10. Power fan header 13 12 11 10 11. Front panel connector 12. Clear CMOS jumper 13. Front USB connectors (2) 14. Mini PCI-E slot 15. Mode switch connector 16. Serial (COM2) connector 17. PCI express X 1 adapter slots (3) 18. Front audio connector 19. PCI express X 16 adapter slot 20. System fan header Chapter 7. Locating connectors, controls and components 25

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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.
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
.
Locating connectors, controls and components
25