StarTech.com 20-in-1 Bay Flash Memory Card Reader, 230 g, 480 MB/s, Windows 98SE/ME/2000/XP/VISTA+ / MAC OS X+ StarTech.com 20-in-1 Bay Flash Memory Card Reader. Weight: 230 g. Read speed: 480 MB/s. Compatible operating systems: Windows 98SE/ME/2000/XP/VISTA+ / MAC OS X+