Dell Latitude E5440 User's Guide download pdf (Page 32)

Line-out connector — Connect headphones or

speakers with integrated amplifiers.

Rear surround out — Connect multichannel-

capable speakers.

Center/LFE surround out — Connect a single

subwoofer.

NOTE: The Low Frequency Effects (LFE) audio

channel, found in digital surround sound

audio schemes, carries only frequency

information (80 Hz and below). The LFE

channel drives a subwoofer to provide

extremely low bass extension. Systems not

using subwoofers can shunt the LFE

information to the main speakers in the

surround sound setup.

Side surround sound connector — Connect

additional speakers.

RCA S/PDIF connector — Transmit digital audio

without the need of analog audio conversion.

Optical S/PDIF connector — Transmit digital audio

without the need of analog audio conversion.

5.1 Audio

The 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

The 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: The 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.

eSATA Connector

eSATA is a bus technology designed to connect external mass storage devices, such as hard drives and

optical drives, to your computer. eSATA provides considerably higher throughput as compared to USB 2.0

or FireWire 800. eSATA cables can be up to 2 meters long.

eSATA ports can be standalone or can be present in the form of an eSATA/USB combo port.

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Dell Latitude E5440 User's Guide Page 32