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6 Combo audio jack
To listen to the sound from your computer, connect a headphone or a headset that has a 3.5 mm 4-pole
plug to the combo audio jack.
Notes:
• If you are using a headset with a function switch, do not press this switch while using the headset. If
you press it, the headset microphone will be disabled, and the integrated microphones on the computer
will be enabled instead.
• The combo audio jack does not support a conventional microphone. For more information, see “Using
audio features” on page 42
.
Bottom view
Note: Your computer bottom view might look slightly different from the following illustration.
Figure 6. ThinkPad Edge E431 and E531 bottom view
1 PCI Express Mini Card slot for wireless LAN card
4 Memory upgrade slot
2 Battery 5 Hard disk drive or solid-state drive
3 Slot for wireless WAN card or M.2 solid-state drive
1 PCI Express Mini Card slot for wireless LAN card
Your computer might have a wireless LAN card installed in the PCI Express Mini Card slot for you to
establish wireless LAN connections.
2 Battery
Use your computer with battery power whenever ac power is unavailable.
3 Slot for wireless WAN card or M.2 solid-state drive
Your computer might have a wireless wide area network (WAN) card installed in this slot for you to establish
wireless WAN connections.
For some models, an M.2 solid-state drive might be installed for data storage instead of a wireless WAN card.
Chapter 1. Product overview 9