There are new drivers available which allow the USB hub to function at: www.raditec.de
The new firmware activates the SAC2k's USB Hub. The computer keyboard, mouse and additional Interfaces can be connected directly to the SAC via the USB 4x Hub. This allows the User to operate the controller remotely, away from the acoustic interference of their noisy computer, as there will be only a few remaining cables necessary to connect your control room with the computer! Only one long USB cable and the monitor cable will be required to connect to the computer. And since the MIDI port of the SAC appears as an additional MIDI Interface on the computer, even the MIDI Master keyboard can be plugged directly into the SAC.