Lenovo IdeaPad Y450 User Manual page 37

Important:
Never insert or remove the SIM card while the computer is on. Doing so may
cause permanent damage to the SIM card as well as the SIM card reader.
Be sure to lock the card holder when the SIM card is inserted.
Removing the SIM card
To remove the SIM card:
1 Turn off the computer; then disconnect the AC adapter and all cables
from the computer.
2 Close the computer display and turn it over.
3 Remove the battery.
Push the SIM card in until you hear a click, and then pull the SIM card
4
out.
Chapter 2. Using your computer
28