I have 2 iMacs and one printer. I want to share using USB without unplugging and plugging back in ad nauseum. Is there a dohickey for taking 2 USB cables down to one? Will this FUBAR the printer or computers? One computer is a 17" flat screen running 10.3.2 and the other is an older DV SE running 9.2 (and sometimes 10.2.8) Thanks