As far as I know, this sould be possible but for this special situation, I suggest you to contact the Customer Center at +41 848 44 66 88
(CHF 0.08/min.) (available 24/7, sometimes you may be required to wait). They can give you the correct information and help you with the order from abroad.
Another information source can be your international office from your incoming swiss university.
I wish you stunning (study) days and weeks in Switzerland!
Best regards, uebe