HP Z1 G2 - Rear Components

Rear components
1 Handle 6 Power cord connector
2 Subwoofer jack(orange) 7 USB 2.0 connectors (4)
3 Audio line-out jack (green) 8 Optical S/PDIF audio output
4 Audio line-in jack (blue) 9 RJ-45 network connector
5 DisplayPort 1.1a connector 10 Security cable slot
4 Chapter 1 Hardware overview