All Automation Panels support USB. Whereas USB signals are transferred via a separate cable with the DVI link (USB is not part of the DVI standard), USB is fully integrated in the SDL. All Automation Panels are equipped with a USB hub that provides up to three USB interfaces. USB peripheral devices such as CD-ROM drives, USB flash drives, or keyboards can easily be connected to the operating unit. Access to the switching cabinet is not necessary. The APC620/ PPC700/ APC810 can also be booted via USB. USB is supported on the first two displays up to a segment length of 30 m. If the segment length is more than 30 m, then USB is only supported on one display. The maximum segment length is 40 m in this case. USB devices can only be connected directly to the Automation Panel (without a hub).