Nexcopy 31 target SD Duplicator. One master to 31 targets. Copy, Copy Compare, Benchmark Speeds, H2 Testing, Password settings and more. Copy SD, SDHC, SDXC and all current Secure Digital formats. Nexcopy manufactures a variety of SD Duplicators which are PC based or Standalone Systems. The PC based systems use our exclusive and feature rich Drive Manager software with advanced functions. Standalone systems are ultra-fast, high speed copiers duplicating gigabytes of data quickly and accurately. Made in U.S.A.