Lenovo B40 70 Laptop User Guide

Lenovo
B40/B50/N40/N50
Read the safety notices and important tips in the 
included manuals before using your computer.
User Guide 

First Edition  (December 2014) © Copyright Lenovo 2014.  Before using the product, be sure to read 
Lenovo Safety and General 
Information Guide  first.
The features described in this guide are common to most models. 
Some features might not be available on your computer and/or your 
computer might include features that are not described in this user 
guide.
LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered p\
ursuant a General 
Services Administration “GSA” contract, use,...

Lenovo
User Guide
Instructions and technical information in this manual are applicable to the following 
Lenovo notebook computers unless otherwise stated.
Model name                  MT
Lenovo B40-30                           20390, 80F1
Lenovo B40-70                                        20392, 80F3
Lenovo B40-45                                        20394, 80F5 
Lenovo B50-30                                        20382, 80ES
Lenovo B50-30 Touch                            20383, 80ET
Lenovo B50-70...

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Chapter 1. Getting to know your computer .......................................... 1
Top view .......................................................................................................................1
Left-side view .............................................................................................................. 6
Right-side view .......................................................................................................... 10
Front view...

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Chapter 1. Getting to know your computer
Top view  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
„B40-30/N40-30/B40-70/N40-70/B40-45/N40-45/B40-80/N40-80 
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Chapter 1. Getting to know your computer
„B50-30/B50-30 Touch/B50-70/N50-70/B50-45/N50-45/B50-80/ 
N50-80
Note: 
•The dashed areas indicate parts that are invisible from the outside.
The illustrations may differ from the actual product. Please refer to the actual product.
Attention:
Do not open the display panel beyond 130 degrees. When closing the display panel, 
be careful not to leave pens or any other objects in between the display panel and the 
keyboard. Otherwise, the display panel can be...

Chapter 1. Getting to know your computer
3
Integrated camera 
(on select models)Used for video communication or taking photos.
Built-in microphone 
(on select models)Used for video conferencing, voice narration, or 
audio recording.
Wireless antennas 
(on select models)
Connects to a wireless adapter to receive and send 
wireless radio signals.
DisplayProvides visual output.
SpeakersProvides audio output.
Power buttonPress this button to turn on the computer.
Fingerprint reader 
(on select models)...

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Chapter 1. Getting to know your computer
„Using the keyboard
Your computer has a numeric keypad, hotkeys, and function keys 
incorporated in its standard keyboard.
Numeric keypad (Applicable for B50/N50 Series)
The keyboard has a separate numeric keypad. To enable or disable the 
keypad, press the Numeric Lock key (Num Lock).
Hotkeys
You can access certain system settings quickly by pressing the appropriate 
hotkeys.
: Mutes/unmutes the sound.: Enables/disables Airplane 
mode.
: Decreases the volume...