Is this a work PC or a home PC? That version doesn't look right for the Home & Home Office product. If it's a work PC I'll move your question to a different place to get it answered.
As far as I know some Trojans can be spread via USB devices and will try to infect other nodes on the network. Your AV, if it's Enterprise, will probably detect it if that's the case but I can't say any more than that. If this is Enterprise, someone else will have to pick this up and advise you.