MSI GT70 WORKSTATION - Manual (Page 22)

Introductions
2-12
Microphone
Š Used for an external microphone.
Š Connect the Center and Subwoofer speakers here.
Line In
Š Used for an external audio device.
Š Connect the Rear speakers here.
Line Out
Š A connector for speakers.
Š Connect the Surround speakers here.
4. USB 3.0 Ports
USB 3.0, the SuperSpeed USB, delivers the higher interface speeds for connecting various
devices, such as storage devices, hard drives, or video cameras, and offers more
advantages over high-speed data transferring.