Acer Aspire 8920G - Manual (Page 85)

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English Universal Serial Bus (USB)
The USB 2.0 port is a high-speed serial bus which allows you to connect USB
peripherals without taking up precious system resources.
High-Definition Multimedia Interface
HDMI (High-Definition Multimedia Interface) is an industry-supported,
uncompressed, all-digital audio/video interface. HDMI provides an interface
between any compatible digital audio/video source, such as a set-top box, DVD
player, and A/V receiver and a compatible digital audio and/or video monitor,
such as a digital television (DTV), over a single cable.
Use the HDMI port on your computer to connect with high-end audio and video
equipment. Single cable implementation allows tidy setup and fast connection.