Lenovo IdeaCentre B345 All-in-One - Manual (Page 31)

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
6
7
8
9
1 0
1 1 1 2 1 3 1 4
1 5
1 6
1 7
1 8
1 9
2 0
4
5
2 1
2 2
2 5 2 6 2 7
2 4
2 3
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