I am getting a new computer that has fewer USB ports than my previous computer. As such I will be forced to use a USB hub. Will the performance of my external hard drives be affected if I connect them to a hub? I am worried that they might be slowed down. I rarely have more than one turned on at time.

Will there be any problems with a program like Acronis True Image detecting the external drives through the hub? Would the hub slow the cloning process using such a program?