5.1 refers to the number of audio channels in most surround-sound
configurations. A 5.1 audio system uses five main audio channels (front
left, front right, center, left surround, and right surround) and one low-
frequency audio channel.
7.1 refers to the number of audio channels in high-end surround-sound
configurations. A 7.1 audio system uses two additional speakers (rear left
and rear right) in combination with the 5.1 audio system.
NOTE: 5.1 or 7.1 audio may not be supported on all computers.
NOTE: On computers with a discrete sound card, connect the
speakers to the connectors on the card.
Universal Serial Bus (USB) is a standard to establish communication
between a computer and different devices. USB allows high speed
connection of peripherals to a computer. Using USB, you can connect
devices like mice, keyboards, printers, external drives, digital cameras,
mobile phones, and so on. USB also supports Plug-and-Play installation
and hot swapping.
Plug-and-Play allows your computer to recognize that a device is
plugged in without restarting your computer.
Hot swapping allows you to remove and connect different USB devices
without restarting your computer.
Mini-USB – A mini-USB connector is a small cable connector which is
used in electronic devices primarily used for data connectivity. Devices
such as cameras, MP3 players, mobile phones, and so on use Mini USB
Micro-USB – A micro-USB connector is smaller than mini-USB connector
and allows you to communicate directly amongst the devices without a
need for a computer.