I am not sure I understand the basis on which this person was jailed. If the court order to search his computer was provided on the basis of probable cause, wh

I am not sure I understand the basis on which this person was jailed. If the court order to search his computer was provided on the basis of probable cause, what was that probable cause? If law enforcement already had evidence of some kind of misdeed, why do they need access to his computer? If the evidence of his misdeeds is on the computer, wouldn't providing it be a) self-incrimination of some description, as mentioned extensively elsewhere here and b) law enforcement's inability to get access to the information get the case dismissed due to lack of evidence?