Attaching RODI to PEX plumbing

[tlhood]

I was looking to set up my RODI to the cold water line in the utility room, but discovered last night that the plumbing is completely done in ... not pvc, not copper, and not threaded vinyl... after some quick research I think it might be PEX. (can attach a picture tonight).

Has anyone any experience with attaching RODI to PEX plumbing? I assume I can't use the needle clamp thing that I wanted to.... Will I have to do it in line? Do I need special fittings?