Lenovo 3000 J Series - Manual (Page 40)

The following illustration shows the locations of parts on the system board (some
models).
1 Microprocessor and heat sink 11 Front USB connectors (2)
2 Microprocessor fan connector 12 Serial (COM2) connector
3 Memory connector 1 13 Front audio connector
4 Memory connector 2 14 PCI adapter connectors (2)
5 Power connector 15 PCI Express x1 graphics adapter
connectors
6 Diskette drive connector 16 Battery
7 IDE connector 17 PCI Express x16 graphics adapter
connector
8 SATA IDE connector (2) 18 System fan connector
9 Front panel connector 19 12v power connector
10 Clear CMOS/Recovery jumper
22 User Guide