The Slim USB External Slot in USB SATA CD DVD Drive/Burner is special for the, Macbook Pro, Macbook Air or other PC/ Laptop with USB port. No enjact button, powered by sigal USB port from your PC/ Laptop
Plug and play, full compatible with Mac or windows os, no need to install any driver program. It is convenience for you to playing music
Movies or install software with this USB external DVD drive, or copy/buring the movies, music from your laptop to a DVD, CD disc