If I connnect my monitor via VGA-USB connector using a USB Hub instead of connecting it directly to my laptop - would the preformance be affected? (See Links to products I have)

In my experience, this almost always has a negative impact, but I've never used the devices you listed.

Also, the 'negative impact' is usually only noticeable when I am playing a game.  (ie: slower refresh... lack of crispness)

As long as it's a powered hub (be sure you're using the AC adapter to power the hub)  there's no difference in the bandwidth UNLESS you've got multiple devices attached to the hub -- in which case the devices on the hub have to share the bandwidth for that specific USB port.

In general, I'd recommend attaching the video adapter directly to one of the laptop's USB ports, and connecting your other devices through the hub, as the video adapter is likely the most bandwidth-intensive device you're using.

Okay! Thanks.

Now I am curious to know if I attach 6 devices to a USB port (hard drives, printers etc) do each one of those devices get 1/6th of the bandwidth of the USB port (ie- The one to which the USB hub is connected)?

This would imply that connecting multiple devices through a USB hub and using them simultaniously will slow things down significantly!!

If I am doing data transfer between 2 external drives, I am best to connected them to separate USB ports on the computer and not to the hub. Correct?

How much bandwidth does a single USB port have?

Very nicely explained. Thanks!