A:Answer The LG - 8x External USB 2.0 Blu-ray Disc Double-Layer DVD±RW/CD-RW Disc Rewriter, Model # BP50NB40 is compatible with Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista, Windows XP, and Mac OS X v.10.7.5 or higher Operating Systems. It only connects to PC/Laptops via its USB port so it you don't have a USB port, there is no way to connect it to your MacBook Air 2018. The USB Y cable enables to receive power from two USB host sockets at once, while only transceiving data with one of those sockets. As long as the host has two available USB sockets, this enables the drive that requires more power than one USB port can supply to be used without requiring a mains adapter...^IFV