Lenovo IdeaPad Y450 User Manual page 17

Chapter 1. Getting to know your computer
System status indicators
Microphone jack (external) ............................................................. 45
Headphone jack (S/PDIF) (external) ............................................... 43
Memory card slot ............................................................................. 20
Integrated wireless device switch
Use this switch to disable the wireless radio of all the integrated
wireless devices on your computer.
CIR port............................................................................................. 22
CIR port, used for Lenovo remote controller.
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