Well, here is my situation. I have a HAF 932 which has 4 USB ports y'd into 2 connections, and my mobo only has 2 USB headers. Since my card reader needs a USB header, I only have 2 of the 4 USB ports active on my case, so I would like to tie all 4 together. Not something I really need (I only use 2 of them anyway), but it has been bugging me.