Lenovo IdeaCentre B550 Touch IdeaCentre B550-B555 Hardware Maintenance Manual - Page 32

Identifying parts on the B555 motherboard, front of the motherboard.

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

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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. 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
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IdeaCentre B550–B555Hardware Maintenance Manual