Lenovo THINKCENTRE 6019 - Manual (Page 121)

Rear connectors
The following illustration shows the location of connectors on the rear of the
computer.
1 PCI adapter connector 9 USB connectors (2)
2 Integrated cable lock-latch 10 ESATA connector
3 USB connector 11 USB connectors (2)
4 USB connector 12 Audio-line-out connector
5 VGA monitor connector 13 Audio-line-in connector
6 Parallel connector 14 Power supply diagnostic LEDs (some
models)
7 Serial connector 15 Power connector
8 Ethernet connector
Chapter 9. Replacing FRUs - Ultra SFF Desktop computers 115