Lenovo A740 All In One - Manual (Page 7)

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User Guide
Front view of the computer
Attention: Be careful not to block any air vents on the computer. Blocked
air vents can cause overheating.
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Built-in microphone Built-in microphone
Camera LED indicator Built-in camera
Built-in microphone Built-in microphone
Near Field Communication (NFC)
Attention: If your computer is equipped with an infrared (IR) remote
control, do not put the USB IR receiver on the same plane as the screen.