Quanmax QDSP-2090 Series User Manual page 16

devices to run simultaneously on a single computer, with some peripheral
acting as additional plug-in sites or hubs.
S/PDIF
S/PDIF output for carrying digital audio signals out to the device.
Phone Jack
Line Out
The stereo headphone jack is used to connect the system's audio out signal to
amplified speakers or headphones.
MIC-IN
The 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.
3G External Antenna
Spared hole on the casing for connecting 3G external antenna
QDSP-2090 Series User's Manual
Chapter 1