I have just bought a USB 2 card with four outputs.I already had two usb hubs,one powered and one not.Will these two"old fashioned" hubs pass signals at the same speed as USB 2,or do I have to buy a special USB 2 hub.Will they restrict the speed to USB1 standard?
Usb 1.1 (old fashioned as you say:-)) is compatible with usb 2 and vice versa, so they will work in harmony with each other. However, if you plug the usb 1.1 hub into a usb2 socket, the speed will be reduced to usb1.1 speeds. Similarily if you plug a usb2 hub into a usb1.1 socket the speed is reduced.
The only way to achieve full usb2 speed is to plug directly into a usb2 socket without any kind of usb1.1 device in the chain, unless of course the device is usb2.
Think of it like this. Usb is as fast as it's slowest part.