Not all USB hubs work with the BeagleBone Black. The following USB hubs are reported to work.
I found this information on the web, but I am sure there are many more that also work with the BBB. Obviously I have not been able to tested them.
Warning: The power used by the USB devices should not exceed the maximum power output of the USB hub (or the BeagleBone Black if one is pluged directly into it).
Note: You will need a powered USB hub if you want to use several USB devices at the same time. (mouse, keyboard, camera, ...)
Plugable 7 Port High Speed USB 2.0 Hub with 3A Power Adapter www.amazon.com Inland 4 Port USB 2.0 Hub www.microcenter.com Manhattan 10-port HUB www.microcenter.com 4-Port USB Cable HUB www.microcenter.com D-LINK DUB-H7 7 Port USB 2.0 Hub www.dlink.com Trust HU-5770 7-Port Powered Hub www.amazon.co.uk