This case is not universal! The case description should be explicitly defined for the various PDA's. I do not have a clue who is responsible for the description, but the IQue 3600, by Garmin is a very common PDA and GPS system that has a flip up antenna on the back side. The Targus case requires two velcro patches be attached to the PDA. The first patch blocks the use of the antenna and the second patch will not permit the PDA to be put into its mobile or charging cradles. In short, the Targus patch system simply does not work for Garmin PDA's. The description of the case on this page should include the former.