Lenovo 3000 J Series - Manual (Page 41)

The following illustration shows the locations of parts on the system board (some
models).
1 Microprocessor fan connector 11 Front panel connector
2 Microprocessor and heat sink 12 SATA IDE connectors (2)
3 Memory connector 1 13 Front USB connectors (2)
4 Memory connector 2 14 Serial (COM2) connector
5 Clear CMOS/Recovery jumper 15 PCI adapter connectors (2)
6 Power connector 16 Front audio connector
7 Diskette drive connector 17 PCI Express x16 adapter connector
8 IDE connector 1 18 PCI Express x1 adapter connector
9 IDE connector 2 19 System fan connector
10 Battery 20 12v power connector
Chapter 3. Installing options 23