VIEWSONIC VS13172 - Manual (Page 12)

ViewSonic VOT125 4
Headphone Jack
The stereo headphone jack (3.5mm) is used to connect the system’s audio out
signal to amplified speakers or headphones.
Memory Card Reader
The built-in memory card reader supports MMC/MS/SD cards used in devices
such as digital cameras, MP3 players, mobile phones, and PDAs.
Power LED
The power LED will light when the PC is powered-on.
HDD LED
The hard disk LED blinks when data is being written onto or read from the HDD.
WiFi LED
When the data is transferring, the WiFi LED will blink.
Card Reader LED
When the data is transferring, the Card Reader LED will blink.
Power Switch
The power switch allows powering ON and OFF the system.