My problem is that my new USB hub device (4World with external power supply - 4 ports - http://www.softcom.cz/DetailPage.asp?CD=USHU4W) is slow. When I connect external disk directly to USB port (on my PC) I got fast speed (20MB/s) but when I connect it through USB hub I got low speed (800kb/s). USB hub seems to be certified for usb 2.0 - at least it is printed on box.
I did some research and via USBInfo program I found out that USB hub connects controller 1.1 (inside my PC) instead of controller 2.0 - I don't know why. Is this the problem?
I have made a picture http://karelkral.wz.cz/usb-vypis.jpg (USB hub is the one named as GASIA - Generic USB hub)