L550/L550D/L555/L555D

Keyboard

Built-in

The internal keyboard provides dedicated cursor

 

control overlay keys,

and

Keys.

 

The keyboard is compatible with the IBM®

 

enhanced keyboard. Refer to Chapter 5, The

 

Keyboard, for details.

 

 

 

 

 

 

Pointing Device

 

 

 

 

 

Built-in Touch Pad

The integrated Touch Pad and control buttons in

 

the palm rest allow control of the on-screen

 

pointer and support functions such as the

 

scrolling of windows.

 

 

 

 

 

 

Power

 

 

 

 

 

Battery pack

The computer is powered by one rechargeable

 

lithium-ion battery pack.

 

 

 

 

RTC battery

The internal RTC battery backs up the Real Time

 

Clock (RTC) and calendar.

 

 

 

AC adaptor

The AC adaptor provides power to the system

 

and recharges the batteries when they are low.

 

It comes with a detachable power cord which will

 

either have a 2-pin or 3-pin plug enclosure.

 

As the AC adaptor is universal, it can receive a

 

range of AC voltages from 100 to 240 volts,

 

however you should note that the output current

 

varies among different models. Using the wrong

 

adaptor can damage your computer. Refer to the

 

AC adaptor section in Chapter 2, The Grand

 

Tour.

 

 

 

 

 

 

Ports

 

 

 

 

 

External monitor

This port provides 15-pin, analog VGA port.

 

This port allows you to connect an external

 

monitor to the computer. Some models include

 

this feature.

 

 

 

 

Universal Serial Bus

The computer supports multiple Universal Serial

(USB 2.0)

Bus ports that comply with the USB 2.0 standard.

One of the USB ports has an eSATA (External

Serial ATA) function.

1-8

User’s Manual