T61 USB Bandwith Help

[eecon]

Are each of the 3 USB ports on my T61 like a separate data pipeline into the computer so high demand bandwith devices like USB hard drives will perform better if kept on separate USB input ports?

It seems from my experience that things run better if I do not put 2 or 3 hard drives on the same laptop USB input port. For instance, when all my Ext HDs and burners are connected via a 4-port hub feeding into only one of the T61's USB input ports, things really seem to slow down.

I'm curious because my new advanced mini-dock for the T61 provides 4 additional USB 2.0 ports.

Does this now give me more direct pipelines or bandwith access into my laptop (a total of 7 USB input ports when the T61 is docked)?

Thanks.

MOD EDIT: Duplicate thread.