Valve looks like it’s adding support for CD-ROM drives to the Steam Frame. A Steam Frame user asked why he couldn’t connect a detachable disc drive to watch movies on the go. A Valve dev replied that they “will would look into it.” Just a few days later, Valve developer Gabe Rowe added CD-ROM support to the Steam Frame’s software. This could eventually let you connect a USB disc drive, read physical CDs, and potentially watch movies from discs on the Steam Frame.