VINTAGE DEC RRD45-AA 4 SPEED 600MB 5.25" HALF HEIGHT INTERNAL CD-ROM DRIVE FOR USE IN MANY DIFFERENT DEC VAXSTATIONS, MICROVAX, ALPHA STATIONS & ALPHASERVER SYSTEMS. 50 PIN NARROW SCSI SE CONNECTION,  FULLY TESTED & FULLY FUNCTIONAL, BOOTS VMS CD WITH NO ISSUES,  30 DAY WORKING WARRANTY.