I bought this for my church to begin building custom PI devices (door monitors/people counters).This kit did not come with a video cable, SD Card, and when I ordered (at extra cost) and just tried to boot for the first time today using the official Raspberry PI installer and OS, the unit doesn't work. power light comes on, no video, no boot, nada. I'm still trying to troubleshoot and evaluate to make sure I've explored all possibilities.I love the idea of the PI 400. I hope to get mine working. But it almost seems as if the box I got was a return. not sure.I will update later if I can figure out why it's not working. I don't know yet if it's DOA or the microHDMI cable adapter I have isn't compatible or what have you. (This is the only device I have with a MicroHDMI, so I can't test the cable with another working electronic device.)I hope to get it going.