Quantum 730AT ProDrive Lightning 730MB 3.5in IDE ATA Hard Drive HDD Desktop

Quantum 730AT ProDrive Lightning 730MB 3.5in IDE ATA Hard Drive HDD Desktop

The Quantum 730AT is a 3.5-inch IDE/ATA internal hard drive from Quantum's ProDrive Lightning product line, offering 730MB of storage capacity. This drive uses a 40-pin IDE interface and a standard 4-pin Molex power connector, making it compatible with a wide range of vintage desktop systems. The PCB controller board and connectors are clean and intact.

Specifications & What's Included

• Brand: Quantum
• Model: 730AT
• Product Line: ProDrive Lightning
• Capacity: 730 MB
• Form Factor: 3.5 inch
• Interface: IDE / ATA (40-pin)
• Power Connector: 4-pin Molex
• Power Requirements: 5V / 12V = 500mA / 300mA
• C/H/S (730MB mode): 1416 cylinders / 16 heads / 63 sectors
• C/H/S (540MB mode): 1120 cylinders / 16 heads / 59 sectors
• C/H/S (365MB mode): 976 cylinders / 12 heads / 61 sectors
• Jumper: AT Only JP11 (Master/Slave/Cable Select configurable)
• Features: AutoTransfer, AutoRead, AutoWrite, AirLOCK, DiskWare, DefectFree Interface, WriteCache
• Country of Manufacture: Japan
• Included: Drive only — no cables or mounting hardware

Applications

The Quantum ProDrive Lightning series was a popular line of IDE hard drives produced in the early-to-mid 1990s, during the transition from MFM/RLL storage to the IDE/ATA standard that would dominate the desktop PC market through the late 1990s. Drives like the 730AT were used in 486 and early Pentium-class desktop computers running MS-DOS, Windows 3.x, and early versions of Windows 95. At 730MB, this drive sits at the upper end of what was considered a large consumer hard drive in its era — the mid-1990s — when a full Windows installation occupied only a fraction of that capacity. Today these drives are sought by collectors and enthusiasts restoring vintage 486 and Pentium systems, as well as operators maintaining legacy industrial and embedded PC equipment that still relies on IDE storage.