DEC ORIGINAL RRD43-AA 5.25" HALF HEIGHT INTERNAL  600MB DUAL SPEED CD-ROM, FOR USE WITH DEC MICROVAX, VAXSTATION, ETC.  TOSHIBA OEM PART# XM-4101B.  FULLY TESTED & REFURBISHED CONDITION,  DRIVE READS AND BOOTS VMS O/S ON MICROVAX 3100 SYSTEM,  30 DAY WORKING WARRANTY.