Below is a product video for a 6FC5210-0DF22-2AA0 Siemens PCU unit which we have in stock and ready to ship. This is a Siemens control unit with software set to run a CNC system. We have a video showing the booting up of a similar PCU 50 Siemens unit on a blog post here where we show one of these units powering up. They are basically a computer with an operating system loaded on that you can hook up to a display, keyboard, and mouse to get booted up and programming your system. Visit MRO Electric and Supply’s website for more parts from Siemens. For any questions email email@example.com or call 800-691-8511.