At the back of the mac there's a slot and if there's a disk in it you have to eject it and to put a cd or dvd into it you just slide it right into the slot and it'll work.
huh? what do you mean? the CD drive doesn't come out, like idk understand your question. your eject the disc when theres a disc in, and the drive doesn't come out.
like there is no tray for it