Have genutz before this USB hub a commercially available USB hub, but only 4 new USB ports, each with an output of a USB 1.1 connection made of a USB2.0 port. Result: The connected USB device (external hard drive, printer, webcam) went lame and needed forever for data transfer. Since I now have the new USB distributor no longer exists all these problems and all connected devices run at USB 2.0 speed (excluding appliances that can only work in USB 1.1 speed [construction due]). I'm very satisfied with this product. Top price for top performance. too empfehlem