USB Hub - connecting several 3.5" USB drives.

[beastman]

Might be a basic one this.
I am looking at connecting 2 or 3 external drives to a laptop to run as a file server/media server but also to use the laptop occasionally as a normal laptop that I can move around. I want to be able disconnect the USB drives easily and quickly so rather than plug them in directly to the USB ports I am looking at getting a decent hub to connect the drives to and then into the laptop. In theory I assume I can just disconnect the hub the one, thereby unmounting the USB drives, rather than unmounting and disconnecting the drives individually. Does does that seem logical and do I need a high spec hub (eg does it need to be a powered one)?

 

[beastman]

thanks gents so it looks like in theory I not doing anything daft or that there's no obvious other way (I already have a NAS - an old one that I'm looking to use as backup only to the other drives). For some reason I thought it might be better to have a powered hub (with nothing to support why!) but as Rroff says, as the connected USB external drives will be powered, I guess there is absolutely no reason to actually need a powered hub.