Straight to the Public Announcement - ARC PRO set for Digital Racing. If you have a large track layout and you attempt to power up the ARC PRO using just one power supply, the ARC PRO will reset itself, similar to a power short. Even if there are no cars on the track, the ARC PRO will continually reset just like a power short event. Large Tracks MUST have BOTH power supplies plugged in before power is applied. Use a power strip with a switch on it, plug both power supplies into the power strip and problem solved. Now, How did I find this out, well, there's 6 hours of my life I'm not getting back.... I converted my Arc Pro for digital only, see forum thread here https://www.slotforum.com/forums/index.php?showtopic=169186 , I then installed power boosters from the Arc Pro base to strategic track pieces furthest away from the power base. To test everything, I took ONE power supply, connected it up, and boom, continuous reset. Since I always triple check everything, couldn't understand what was going on. Undid everything, grabbed my voltmeter, quadruple checked all my wiring, no idea what was causing it. I then decided to only connect one end of the Arc Pro base to my track, leaving the other end unconnected, and it worked. I then disconnected the connected end, connected the other end of the power base to the track on that side and powered up, that worked, tried to connect both ends of the Power Base to the track, reset. Upon power up, I could hear the lane changer motors "clicking" right before the Arc Pro base would reset itself. Hhhmmm, so I went around the track disconnecting each lane switch piece thinking there could be a short in one. After removing enough pieces, I got a false positive, because, the Arc Pro started working, not because I removed a lane changer, just the fact I removed ENOUGH of them to where the single power supply wasn't getting overwhelmed. After an hour of troubleshooting lane changers, then I had the idea that maybe, just maybe, the single power supply was getting overwhelmed because all the "Lane Changers" were energizing simultaneously. So, I connected both power supplies to the ARC PRO and started to put my track back together, along with all the Power Booster track pieces, and whalaa, everything worked. So, for anyone planning large track layouts with the ARC PRO, make sure both power supplies are connected to the Base and both go to a powerstrip so when all the lane change motors energize simultaneously, there's enough power supply to handle the surge.