I asked ChatGPT and got:
" The Hubitat Elevation® Model C-8 Pro smart home hub utilizes a USB-A to USB-C power cable, accompanied by a 5V power adapter. It's crucial to use the provided power supply, as the C-8 may not function correctly with alternative USB-C power sources. ​hubitat.comHubitat
Users have reported that substituting the original cable with longer or different USB-C cables can result in the hub not powering on. This issue may stem from increased resistance and voltage drop in longer cables or the absence of necessary data lines in some charging cables. For optimal performance, it's recommended to use the supplied cable or ensure any replacement is of high quality and matches the original specifications. ​Hubitat
In summary, to ensure reliable operation of your Hubitat C-8 Pro, it's best to utilize the included 5V power adapter and USB-A to USB-C cable. If a longer cable is necessary, choose a high-quality data-capable cable to maintain proper functionality.​"
So I guess I could buy a quality longer cable and use the existing 5V power adapter.
