Vintage IBM floppy drive controller 6181682 XM 8 bit ISA ISA584

Vintage IBM floppy drive controller card 6181682A 8 bit ISA ISA671

Winbond ISA 16‑Bit Multi‑I/O Controller Card – IDE Floppy Untested

IBM 6181682 XM Floppy Drive Controller Card 8-bit ISA for IBM PC/XT 5150 5160

Vintage IBM floppy drive controller 1501484 XM 8 bit ISA ISA615

Vintage IBM floppy drive controller card 6181682A 8 bit ISA ISA673

Vintage IBM PC XT floppy drive controller card 6181682 XM ISAB42

Vintage TI 8-Bit ISA Floppy Controller Card National Semiconductor 286/386/486