M2851F Disk Pack Unit

This was a medium-capacity removable magnetic disk unit announced in 1975 by Mitsubishi Electric. It achieved outstanding cost performance while using the same high-density recording/playback technology as high-capacity removable magnetic disk units such as the M836 and M2837. It was used for data files of mid/low-end machines of the COSMO Series, and for office computers and minicomputers.