Filters on reference lists

Hi All,

I'm wondering if it is possible to have multiple filters on a reference list:

Example:

So you have two drop down menus:

Hardware Required: (Reference List 1)

Pc

Mac

Other

Model (Reference List 2)

iMac

Pc

iPad

Laptop

So when the user selects Mac from the Hardware required in the Model drop down menu it only displays iMac or iPad or if they select Pc in Hardware required then in the Model drop down menu if only displays Pc or Laptop?

Hope this makes sense, I have read a couple of filter articles but not quite what I need.