Slogger, an established producer of expansions and a reseller of other disc systems, introduced the Electron Disc System in early 1987, priced at £74.95, featuring the Cumana Floppy Disc System interface, which was combined with an Acorn-compatible DFS, SEDFS, having the capability of reading 40-track discs on 80-track drives plus support for Slogger's tape-to-disc conversion products, and reported as offering "virtual 100 per cent 8271 emulation" for compatibility with traditional DFS software. The SEDFS ROM was also available separately for existing Cumana interface owners, priced at £24.95.