Lenovo IdeaCentre B540 Hardware Maintenance 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. Touch Control Board Connector
2. SATA Power Connector
3. LVDS Connector
4. SATA Connector
5. SATA Connector
6. PSU P1 Connector
7. Converter Connector
8. HWTV Module Connector
9. B-CAS Connector
10. Mini PCI Connector
11. Bluetooth Connector
12. Rear I/O Connector
13. BIOS Battery
14. Power Connector
15. Speaker Connector
16. LED Board Connector
17. Card Reader
18. USB Connector
19. Audio Connector
20. Memory Connectors
21. CPU Socket
22. PSU P2 Connector
23. Fan Connector
24. Touch Function Board Connector
25. Webcam Connector
.
Chapter 7 Locating connectors, controls and components
25