I have a base M1 Mini with 8GB Ram and 256 SSD. I have my mini on a long 8 feet table. I think the cord it comes with is about 6 feet. My only outlet close by is at the very end of the table and another 4 drawer chest to the right of that. So about 11 feet away. I can plug into a power strip surge protector. But I still need another couple of feet. Do they make any longer cords? Or is it safe to use the mini with an extension cord?