* for selected models
For detailed FRU and CRU information, such as the FRU part numbers and supported computer models, go
to:
http://www.lenovo.com/serviceparts-lookup
System board
Figure 1. M70a system board
1 LCD LVDS connector
2 Integrated camera and microphone module connector
3 Microprocessor socket
4 Serial (COM1) connector
5 Touch board connector 6 Memory slots
7 M.2 solid-state drive slot 8 M.2 Wi-Fi card slot
9 Optical drive connector 10 Clear CMOS (Complementary Metal Oxide
Semiconductor) / Recovery jumper
11 ME disable header
12 Cover presence switch connector (intrusion switch
connector)
13 Internal speaker connector
14 Storage drive connector
15 Card reader connector 16 LCD backlight connector
17 Coin-cell battery 18 System fan connector
Chapter 6. Hardware removal and installation 59
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