Genuine NEC Dell XPS 420 JN387 FD1231M Black 1.44MB 4" inch Wide Internal Floppy Drive Assembly Compatible Part Numbers: JN387, FD1231M, 134-506790-745-4, E-H012-02-0819 Genuine Dell Floppy Drive 1.44MB For Dell XPS 420 Dimensions: 4" W x 1" H x 5.5" L Includes: Floppy Drive only! Compatible but not limited to: Dell XPS 420 System Compatible Part Number: JN387, FD1231M, 134-506790-745-4, E-H012-02-0819