The DTU-2000 data transfer unit is a low-cost desktop unit used to download data from removable DTD-XXXX memory cartridges used in the ADSR-4003 Advanced Data Server and Recorder. Data recorded using the ADSR-4003 downloads to a local PC or server using the USB interface port on the DTU-2000 and the files on the DTD-XXXX are available to the Windows operating system.