Need help on this. Case question

[HYMAN]

Will all Mid tower cases have the defualt ps2 mouse and keyboard, parrallel, usbs, serials, but also holes for mobos that have onboard audio and video?

 

[Wolfman35]

Most Quality ATX Cases come with interchangable plates for the I/O Shield. The one you want is called a Venus and is by far the most popular. Some generic cases use stamped in shields and can either have the Venus style or the one without the audio I/O (don't remember the name of that one) There is an oddball that positions the KB/Mouse ports horizontally rather than verticaly which is Useless nowdays.