Lenovo IdeaCentre B550 All-in-One - Manual (Page 32)

Identifying parts on the B555 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
2 1
2 2
2 3
2 4
4
5
1. CPU Socket 13. Mini PCI connector
2. Front indicator board 14. TBD
3. Speaker connector 15. Converter board connector
4. RJ45 connector 16. Motherboard power connector 1
5. USB 2.0 connectors (2) 17. e-SATA connector
6. USB 3.0 connectors (2) 18. e-SATA connector
7. HDMI-in/out connectors 19. Camera connector
8. Mini PCI connector 20. LVDS connector
9. Touch control board connector 21. e-SATA connector
10. Front function board connector 22. e-SATA connector
11. B-CAS connector 23. System fan connector 1
12. Power board connector 24. Motherboard power connector 2
26 IdeaCentre B550–B555Hardware Maintenance Manual