Samsung SFD-321B/PCN4 3.5 Internal Floppy Disk Drive 1.44MB PC Desktop

Samsung SFD-321B/PCN4 3.5 Internal Floppy Disk Drive 1.44MB PC Desktop

The Samsung SFD-321B/PCN4 is a 3.5-inch internal floppy disk drive designed for use in desktop PCs. It reads and writes standard 1.44MB DD/HD 3.5" floppy diskettes and connects via the standard 34-pin ribbon floppy interface common in PC systems of the era. It draws power from a standard 4-pin Berg/floppy power connector at DC 5V, 0.7A.

Specifications & What's Included

• Manufacturer: Samsung
• Model: SFD-321B/PCN4
• Drive Size: 3.5 inch
• Storage Capacity: 1.44MB (HD)
• Interface: 34-pin ribbon floppy connector
• Power: DC 5V, 0.7A (4-pin Berg connector)
• Form Factor: Internal, half-height
• Certifications: CE, CSA, UL, TÜV (visible on label)
• Drive only — no cables or mounting hardware included

Applications

Internal 3.5" floppy disk drives like the Samsung SFD-321B were standard equipment in desktop PCs from the late 1980s through the mid-2000s, used for booting operating systems, transferring small files, and loading software before USB and optical media became dominant. Today they are used primarily for legacy system maintenance — keeping older desktop PCs, industrial computers, and CNC machines operational — as well as data recovery from old floppy media. The standard 34-pin interface makes them compatible with virtually any PC motherboard or controller card that includes a floppy header.