Apple was considering releasing a version of the Mac mini with a built-in dock for an iPod nano, photographs of an unreleased prototype reveal, one that could have enabled synchronization of music and other content with the portable music device without relying on a separate cable or dock.A prototype Mac mini sporting an iPod nano dock [via @DongleBookPro]Posted to Twitter on Saturday, the images by @DongleBookPro show a first-generation Mac mini, complete with a white top, but with a cut-out section to the rear of the computing device. Located at the back and in the center line of the top casing, a gap offers a space for a user to place an iPod nano.Read more