The description copied and pasted directly from http://us.toshiba.com/accessory/PA5232U-1ETB/ shows the same asterisks says
does not require any additional AC adapter*
No software needed, drivers or external power* needed
What I don’t get is what does the asterisks mean and CAN you provide external power if you want? Images of the hub elsewhere don’t show all the sides so I don’t know if you can supply an adapter to make sure you got enough power to supply some of those heavy items.