> Actually it's a modified RCA/Phono jack, according to my Friend at > Apple. But, not sure how that info can help you, since I don't know > how it's been modified OH MY GOSH! Looking at it now, it appears to be so (haven't taken measurements. The ring is from an RCA, and the center post, if you are referring to the power plug, and not the power socket on the computer. Cool. I don't know how they modified the inside of the power socket to get the phono (stereo minijack) contacts in there...