Lenovo IdeaPad U450 - Manual (Page 2)

Buttons and functions External devices connection
Integrated camera
The integrated camera offers an improved notebook
experience for video-centric applications.
Lenovo IdeaPad U450 SP V1.0_EN_p2
OneKey Rescue System button / Power button
Repair Windows system kernel files or restore the system to
its original state in case of an unrecoverable error.*
Start the computer.
*If OneKey Rescue System is installed.
Use this switch to turn on/off the wireless radio of all wireless
devices on your computer.
Wireless radio switch
Switches between the independent graphics card mode and
integrated graphics card mode.
Graphics Card switch (specific models only)
Volume buttons
Mute/Unmute the computer.
Volume down.
Volume up.
Notes:
• The above connection illustration is only for reference. You are responsible for
evaluating the quality and compatibility when purchasing external devices. Function of
all external devices is not guaranteed. Follow the instructions shipped with the devices
when connecting them to your computer.
• The illustrations in this manual may differ from the actual product.
Please refer to the actual product.
 Attention:
Differring in backlight, the LCD on marketing can be divided into CCFL (Cold Cathode
Fluorescent Lamp) LCD and LED (Light Emitting Diode) LCD.
The LCD applied LED backlight technology which adopts LED as the light source and
is mercury-free and more energy-saving than CCFL backlight technology.
Notes:
• Do not operate this switch when the computer is in sleep, hibernation or
power-off mode as system error may occur.
• To ensure HDMI output quality, only use HDMI in the independent graphics card
mode. Set the switch to DIS whenever you connect an HDMI device.
Ethernet
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