Lenovo 10131/90A9 Maintenance Manual page 29

Rear view
The following illustration shows the location of connectors and components on the rear of the computer.
1. HDMI connector (selected models only)
2. Wi-Fi antenna (selected models only)
3. On-board VGA connector
4. USB 3.0 connectors
5. USB 2.0 connectors
6. Ethernet connector
7. Audio connectors
8. PCI Express X 16 graphics adapter slot (some models
are equipped with a graphics card)
9. PCI Express X 1 adapter slot (some models are
equipped with USB 3.0 or TV tuner card)
10. Power connector
11. Voltage selection switch (selected models only)
.
Chapter 7 Locating connectors, controls and components
23