This refurbished computer arrived within the promised 2 days, looked unscratched and undented as promised, and functioned well. I partitioned the drive into a dual boot, IOS and Windows---something not possible with the new M1 chip. Two concerns: the light-weight non-OEM charger lasted 8 hours and the fan starts up almost immediately and stays on. Possible over-heating?I have now had the computer for five days and have just upgraded my review from 3 to 5 stars. My reason: the supplier sent a credit covering purchase of a replacement charger and there is no longer a potential overheating problem. Probably caused by migration of Dropbox files and folders, something typical to a new computer.