Quanmax QBOX-4000 Series User Manual page 18

MIC-IN
The pink microphone jack is designed to connect the microphone used for
video conferencing, voice narrations, or simple audio recordings.
Line-IN
The Line-in jack is designed to take input from a higher-powered sound source.
USB
The USB (Universal Serial Bus) port is compatible with USB devices such as
keyboards, mouse devices, cameras, and hard disk drives. USB allows many
devices to run simultaneously on a single computer, with some peripheral
acting as additional plug-in sites or hubs.
QBOX-4000 Series User's Manual
18
Chapter 1