B-Stock, Ketron USB & SD Card Reader for SD5, SD8, Floppydrive replacement, USB reader for Pen Drives, SD CARDS and independent USB peripheral units,to manage Midifiles, Registrations, Styles and all the other files supported by the Ketron products,You can also play back audio files such as Wave and MP3 directly from a USB Pen Drive, SD CARD ( audio/midi player) and independent USB self powered peripheral units, new operating systems, which you can download free of charge from our website www.ketron.it, USB & SD CARD READER manages SD CARDS with maximum capacity of 32GB, USB Pen Drives, currently on the marketplace, and also other independent USB peripheral units with FAT formatting, Attention! Before installation, backup the internal hard disk! Internal hard disk and card reader do not work together! Card reader replace hard disk!, B-Stock with full warranty, may have slight traces of use