This case will not work with most iPAQ PDAs because it is designed for iPAQs with a side hinging cover. The case actually attaches to the hinge of the cover, thereby replacing whatever cover was on the PDA. Unfortunately, my hx2755 has a cover that hinges from the top, so this case won't really work for it. Its a tight squeeze with the cover attached for my PDA to fit, but it does have some room for a few credit cards and maybe some SD cards.