Delete comment from: Ken Shirriff's blog
Wow. This connector is crazy. When I first tested my broken one, I found that all five pins were connected together. I bought a replacement on eBay and it showed the same. You can't have positive and negative all connected together ... or so I thought.
Here's my question: my replacement cable identifies itself (and therefore identifies to the computer) that it is a 60w supply. It is, however, now attached to my 45w supply.
Can this become an issue? (the computer will think, "my, what a wimpy 60w power supply".
Jan 1, 2018, 4:09:09 PM
Posted to Teardown and exploration of Apple's Magsafe connector