I realize that this is like 3 years too late but its’s for the 10gbps (sort of) point-to-point ethernet connection you can make by connecting two Macs together via thunderbolt.

I don’t understand, when do you need to remove this if it’s not broken already? Are there components underneath that can be replaced/fixed?

You gotta wonder though, with the vents on the other side of the driver, doesn’t this mean that the ferrofluid would degrade that much more quickly? Maybe it’s only meant to be used for 5-7 years, which is reasonable for laptops, etc, but if I’m going to buy a speaker, I’d want to get one that sounds great, and keeps sounding great for a long time…

Ohh, right that makes more sense… It would sound horrible if it was solid the way it’s so thick and uneven on the coil. Scratch what I said about “potting epoxy”

Also I’m baffled by a sentence in the post linked about diamond tweeters, what does “accurately reproducing audio above and beyond the limits of human hearing” even mean? Isn’t that a little paradoxical?

I think what you’re referring to might be the potting epoxy. The golden brown liquid-looking stuff on the coils?

In this step, you are cleaning the keypad while it is removed from the calculator, and the photo should reflect that. someone should update this with the correct photo!