Memorex Telex 711186669587 Hard Disk Floppy Drive Controller ISA Card 8-Bit

Memorex Telex 711186669587 Hard Disk Floppy Drive Controller ISA Card 8-Bit

The Memorex Telex 711186669587 is an 8-bit ISA combo controller card that handles both hard disk drive and floppy disk drive interfaces from a single expansion slot. Designed for IBM PC/XT-class machines and ISA-bus compatibles, this type of card was a standard building block of early PC systems in the mid-to-late 1980s, combining two essential storage controllers onto one board to conserve the limited expansion slots of the era.

Specifications & What's Included

• Manufacturer: Memorex Telex
• Part Number: 711186669587
• Bus Interface: ISA (8-bit)
• Controller Type: Combo Hard Disk Drive + Floppy Disk Drive Controller
• Hard Disk Drive header (labeled HARD DISK DRIVE on PCB)
• Floppy Disk Drive header: J2 (Floppy Disk Drive)
• Floppy Controller header: J3 (Floppy Controller)
• Power header: J4
• Rear bracket included (standard ISA single-slot profile)
• Multiple DIP ICs on component side; clean green PCB with no visible damage
• Card only — no cables included

Applications

ISA combo hard disk and floppy controller cards like this one were essential components in IBM PC/XT-compatible desktop computers during the 1980s. The ISA (Industry Standard Architecture) 8-bit bus was the expansion standard introduced with the original IBM PC in 1981 and remained widely used through the XT era and into the early AT period. A combo controller card allowed a single slot to manage both the hard drive (typically MFM or RLL encoding) and one or two floppy drives, making it a core component in early office and business PCs. Today these cards are sought after by vintage PC restorers and collectors working on period-correct IBM PC/XT builds.