Reply to Serato and Dicers USB port issue

Right - I picked up a cheap SL1 box t'other day (mate gets cheap gear from them, so it was virtually free) and the wife had kindly bought me a pair of dicers for my birthday

Issue is, they both seem to like the same USB port on my laptop, and the devices won't start in any of the other two (all USB ports are working, I've plugged my A8 and VCI 100 into the ohters since this issue started and they work fine)

If I plug the dicers into port A they work, but in B&C they just go into looping lights mode

If I plug the SL1 box into port A it's fine and Serato opens in 'playing' mode, but in B&C it will only go into track analyse mode ...

I'm in Windows 7 x64 Professional

Anyone got any idea how to fix this? Please Obi-wan you're my only hope ...