Before you can use mobile data on your laptop, you need to insert your SIM.
Find an opener for the card holder. Insert the opener into the small hole in the SIM holder.
Remove the SIM holder from your laptop.
Please note that your laptop only supports nano SIMs.
Turn your SIM so the angled corner of the SIM matches the angled corner of the SIM holder and place your SIM in the SIM holder.
Slide the SIM holder into your laptop.