1, magnetic card reader ( USB interface,3 traks.compatible with windows 7, xp, linux, mac OS) 2.excellent quality KSI - MSR-210 Magnetic Card Reader The MSR-210 magnetic card reader is ideal for use in complimenting many applications such as Retail, Time-keeping, Security, etc.FeaturesCompact sizeSingle, Dual or Triple track decodingBi-directional card swipe and readingAudible read ...