Lenovo J SERIES 3000 - Manual (Page 78)

Machine Types 7387, 7388, and 7389
1 Microprocessor fan connector 11 Front panel (power switch/LED) 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
6 Power supply connector 16 Front audio connector
7 Diskette drive connector 17 PCI Express x16 graphics adapter connector
8 IDE connector 1 18 PCI Express x1 graphics adapter connector
9 IDE connector 2 19 System fan connector
72 Hardware Maintenance Manual Lenovo 3000 J Series