Lenovo IdeaPad U450p - Manual (Page 50)

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Chapter 3. Using the Internet
4
Remove the SIM card compartment cover.
5
Push the SIM card in until you hear a click, and then pull the SIM card out.
6
Install the SIM card compartment cover.
7
Put the battery back in place, turn the computer over again, and
reconnect the cables.
Note: 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.
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