Left Side - Asus E11819 E-Manual

Left Side

Audio speakers
The built-in audio speakers allow you to hear audio straight
from your Tablet. Audio features are software-controlled.
Headphone/Headset/Microphone jack
This port allows you to connect amplified speakers or
headphones. You can also use this port to connect your headset
or an external microphone.
18 ASUS Tablet and ASUS Keyboard Dock E-Manual