However, it’s not very clear if that 15W goes to each occupied port or is shared involving two ports. When all 3 ports are occupied, the highest two provide 15W (all over again, regardless of whether separately or mixed is unclear), with The underside port outputting 45W of power. https://spenceruywww.snack-blog.com/17166829/5-easy-facts-about-apple-magsafe-2-described