I purchased this keyboard due to a need to switch from PS2 to USB (my notebook computer does not have PS2 connectors, and did not work well with a USB to PS2 adapter), and chose it based on the fact that it is a "USB 2.0" keyboard with builtin hub. I was disappointed to find out that the hub on the keyboard is for low speed USB devices only (USB 1.1), but there is a USB socket on the top edge of the keyboard (pointing upwards) that is for USB 2.0 devices. The way this is accomplished is by using a second USB cable, probably wired only as a USB extension cable to this top socket. So the keyboard cable is terminated in two USB connectors, and the documentation included with the keyboard says that both USB cables need to be connected for proper operation. I only have one USB connector available to me, which was the reason I needed the USB hub builtin (so I can daisychain my mouse). I am forced to return this keyboard, and find another with a builtin hub, without having plugged it in. This keyboard should work fine for someone with two availble USB ports, and doesnt mind an upwardfacing USB port for 2.0 devices (the other two ports are horizontal on the top edge, more like one would expect for a keyboard hub). Note that the keyboard construction and feel reflects its low price the plain HP keyboard that this unit was to replace is built like a tank in comparison. http://garyadair.com/324742
