7.1 Audio; Webcam; Network; Local Area Network - Dell Alienware Series Manual

2.1 Audio
2.1 refers to a system with two speakers (left and right channel) and one subwoofer.
5.1 Audio
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 Audio

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. For more information on setting up audio, see Setting up audio.

Webcam

A webcam enables you to capture videos and photos, and can also be used for video calls. Your display may have a built-in webcam or you
can connect external webcam to your computer. Camera quality is mainly defined by the number of pixels it can capture.
To use the webcam, you must install webcam drivers and software. If you ordered the webcam along with your computer, the drivers and
software are generally installed when you receive your computer. For more information on setting up the webcam, see Setting up your
webcam.

Network

A network allows you to connect your devices with each other and to the internet. These devices include computers, tablets, phones,
printers, and other peripherals. You can set up your network using cables (LAN) or using wireless devices (WLAN). Networks can be set up
using Ethernet, Wi-Fi, WWAN, Bluetooth, and so on.

Local Area Network

Replace this text with your content. Devices are connected using Ethernet cables and cover a relatively small area, generally within a house
or a building.

Wireless Local Area Network

Devices are connected wirelessly and cover a relatively small area, generally within a house or a building. The wireless connection used for
setting up WLAN is generally Wi-Fi (802.11x where x refers to the different 802.11 protocols).

Wireless Wide Area Network

Also known as Mobile Broadband, this service is generally provided by the phone companies for use on mobile devices. A mobile device or
laptop must support WWAN technology to connect to this network.
About your computer 27