L450/L450D

Microphone jack

A 3.5 mm mini microphone jack enables

 

connection of a three-conductor mini jack for

 

monaural microphone input, and connection of a

 

stereo device for audio input.

 

 

Headphone jack

This jack lets you connect a stereo headphone

 

(16 ohm minimum). When you connect

 

headphones, the internal speaker is

 

automatically disabled.

 

 

Volume control

Use this dial to adjust the volume of the internal

 

stereo speakers and optional external stereo

 

headphones (if connected).

 

Move the Volume control to the left to decrease

 

the volume and to the right to increase the

 

volume.

 

 

Left side

The following figure shows the computer’s left side.

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2

3

4

5

1.Cooling vents

2.External monitor port

3.LAN jack

4.HDMI out port

5.Universal Serial Bus (USB 2.0) port

 

Figure 2-2 The left side of the computer

 

 

Cooling vents

The cooling vents help keep the processor from

 

overheating.

 

 

Do not block the cooling vents. Keep foreign metal objects, such as screws, staples and paper clips, out of the cooling vents. Foreign metal objects can create a short circuit, which can cause damage and fire, possibly resulting in serious injury.

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User’s Manual