Lenovo J SERIES 8257 - Manual (Page 13)

The following illustration shows the locations of parts on the system board for
some models.
1 Microprocessor and heat sink 11 Front panel connector
2 Microprocessor fan connector 12 Power LED connector
3 Memory connector 1 13 Clear CMOS/Recovery jumper
4 Memory connector 2 14 Front USB connectors (2)
5 Power connector 15 Battery
6 Diskette drive connector 16 PCI connectors
7 Primary IDE connector 17 Front audio connector
8 Secondary IDE connector 18 AGP connector
9 System fan connector 19 12v power connector
10 SATA connectors (2)
Chapter 1. Locations 5