Lenovo B545 IdeaCentre B345-B545 All-In-One Hardware Maintenance Manual - Page 31

Identifying parts on the motherboard, front of 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. 22 1 2 3 4 5 6 7 8 9 10 1. Fan connectors 2. Camera connector 3. Touch control board connector 4. Front function board connector 5. Optical drive SATA connector 6. Hard disk drive SATA connector 7. Scalar board connector 8. B-CAS Connector 9. Wi-Fi card connector 10. TV-Tuner card connector 11. Rear I/O connector 12. Power switch board connector 13. Speaker connector 14. Front LED indicator board connector 21 25 26 27 20 19 18 17 24 23 16 15 11 12 13 14 15. Card reader 16. USB connector 17. Microphone jack 18. Headphone jack 19. USB connector 20. Memory slots 21. CPU Socket 22. Power supply connector 23. Battery 24. Power supply connector 25. Optical drive power connector 26. Hard disk drive power connector 27. Bluetooth connector 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. Fan connectors
15. Card reader
2. Camera connector
16. USB connector
3. Touch control board connector
17. Microphone jack
4. Front function board connector
18. Headphone jack
5. Optical drive SATA connector
19. USB connector
6. Hard disk drive SATA connector
20. Memory slots
7. Scalar board connector
21. CPU Socket
8. B-CAS Connector
22. Power supply connector
9. Wi-Fi card connector
23. Battery
10. TV-Tuner card connector
24. Power supply connector
11. Rear I/O connector
25. Optical drive power connector
12. Power switch board connector
26. Hard disk drive power connector
13. Speaker connector
27. Bluetooth connector
14. Front LED indicator board connector
Chapter 7
.
Locating connectors, controls and components
25