TheApple USB SuperDrivealso lacks any mechanical ejection capacities.

How do I eject a CD from my Mac?

I inserted a CD into my Mac, and now I can’t figure out how to eject it.

Mature putting CD in laptop drive, close-up of hand.

Tom Grill/Photographer’s Choice RF/Getty Images

Where is the eject button?

Thats too bad because Terminal offers a few capabilities missing from other methods.

If it thinks there is no disc present, it will not perform the eject command.

DVD being Ejected

Epoxydude/Getty Images

This includes multiple internal or external drives.

The hole allows a thin steel wire, usually a handy paperclip, to be pressed into the hole.

In other words, a case of design trumping function.

OS X Startup Manager

Courtesy of Apple

Eject Menu Added to Menubar

Screen shot courtesy of Coyote Moon, Inc.