Lenovo B450 Laptop User Guide

							Important safety information
v
Working place
Do NOT use the computer in humid places such as a bathroom.
Keep the computer and other parts away from liquids.
Danger:
 An electric shock may be caused by spilled liquid. 
Do NOT use the computer during a lightning storm.
Attention:
 Lightning storm may damage the computer and result in an 
electric shock.
Keep a good ventilation of the computer and other parts. 
Danger:
 Placing the working computer or other parts on a bed, sofa or 
other flexible surface may block the ventilation slots causing 
overheat of your computer or other parts to overheat or even 
catch a fire.
Turn off wireless devices where they may cause interference, such as in 
a hospital or at an airport.


 
						

							vi
Important safety information
On using
Use ONLY the power cord, power adapter and battery pack shipped 
with the computer and never use them with another product.
Be sure the power outlet is suitable for the plug and provides the 
correct voltage and current for the product you are installing.
Danger:
 An unsuitable power supply may damage your computer or 
cause an electric shock or fire.
Do NOT use a power outlet, power cord, power adapter or battery 
pack that appears to be damaged or corroded.
Do NOT share an electrical outlet with other home or commercial 
appliances that draw large amounts of electricity.
If power strips are used, the load should NOT exceed the power strip’s 
input rating. Unplug the power cord if there is a cracking, hissing, or a 
popping sound, or a strong odor comes from the computer.
Danger:
 Overloading the power supply may cause unstable voltages 
which might damage the computer, data, or attached devices, 
or even cause a fire.

 
						

							Important safety information
vii
Do NOT wrap the power cord around the power adapter or other 
objects.
Do NOT squeeze or pinch the cord, or place heavy objects on it.
Attention:
 Stressing the cord may cause the cord to fray, crack or crimp 
which may present a safety hazard.
Avoid keeping your hands, your lap, or any other part of your body in 
contact with a hot section of the working computer for any extended 
length of time.
Attention:
 Extended contact with your body, even through clothing, could 
cause discomfort or even a skin burn.
Do not drop, bump, scratch, hit or place heavy objects on the liquid 
crystal display (LCD) of your computer.
Attention:
 Direct contact with liquid crystal material from a broken LCD is 
hazardous; if contact occurs, rinse with large amount of running 
water for more than 15 minutes.


 
						

							viii
Important safety information
Service and upgrades
Do NOT attempt to service a product yourself unless instructed to do 
so by the customer support center or your documentation.
Attention:
 DO NOT take risks or attempt to diagnose the situation 
yourself. Contact the customer support center for further 
guidance. For a list of service and support phone numbers, 
go to http://consumersupport.lenovo.com.
Lenovo provides documentation with instructions when it is 
appropriate for customers to install options or replace units (CRUs). 
Closely follow all instructions when installing or replacing parts.
Disconnect the attached power cords, battery pack, and all the cables 
before you open the device covers, unless instructed otherwise in the 
installation and configuration procedures.
Keep the covers closed whenever the computer is plugged in.
 
						

							1
Chapter 1. Getting to know your computer
To p  v i e w   - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Note:The illustrations in this manual may differ from the actual product. Please refer to 
the actual product. 
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							2
Chapter 1. Getting to know your computer
Attention:
•Do NOT open the display panel beyond 150 degree. 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 may be damaged.
Speaker
Power button
Press this button to turn on the computer.
OneKey Rescue 
System buttonPress this button to open OneKey Rescue System (If 
OneKey Rescue System has been preinstalled) when the 
computer is powered off.
Note: For details, see “Chapter 4. OneKey Rescue System” on page 28.
System status 
indicatorsFor details, see “System status indicators” on page 19.
Integrated 
camera (specific 
models only)Use the camera for video communication.
Wireless module 
antennas 
(specific models 
only)The built-in antennas ensure optimal reception of wireless 
communication radio.
Computer 
displayThe LCD display provides brilliant visual output.
TouchpadThe touchpad functions as a conventional mouse.
Note: For details, see “Using the touchpad” on page 14.









 
						

							Chapter 1. Getting to know your computer
3
Left-side view  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
AC power adapter 
jackConnect the AC adapter here.
Note:For details, see “Using AC adapter and battery” on page 11.
VG A  p or tConnects to external display devices.
RJ-45 portConnects to an Ethernet network.
Note:For details, see “Wired connection” on page 24.
Microphone jackConnects to an external microphone.
Headphone jackConnects to an external headphone.
Attention:
Listening to music at high volume over extended periods of time may 
damage your hearing.
USB portsConnects to USB devices.
Note:For details, see “Connecting a universal serial bus (USB) device” on page 23.
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							4
Chapter 1. Getting to know your computer
Right-side view  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
Optical driveReads/Burns optical disks.
USB portsConnects to USB devices.
Note:For details, see “Connecting a universal serial bus (USB) device” on page 23.
Kensington slotAttach a security lock (not supplied) here.
Note:For details, see “Attaching a security lock (not supplied)” on page 20.
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							Chapter 1. Getting to know your computer
5
Front view  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Memory card slot Insert memory cards (not supplied) here.
Note:For details, see “Using memory cards (not supplied)” on page 22.
Integrated 
wireless device 
switch Use this switch to turn on/off the wireless radio of all 
wireless devices on your computer.
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							6
Chapter 1. Getting to know your computer
Bottom view  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
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