Quantum 105AT 105MB 3.5" IDE Hard Drive PATA

Quantum 105AT 105MB 3.5" IDE Hard Drive PATA

This is a Quantum 105AT hard drive, a 105 MB capacity IDE/PATA unit from the mid-1990s era of personal computing. The 3.5-inch form factor and IDE interface made this a standard choice for desktop and tower systems of the period. Despite its modest capacity by modern standards, these drives remain functional and are valued by vintage computer enthusiasts and retro system restorers.

Specifications & What's Included

• Manufacturer: Quantum
• Model: 105AT
• Capacity: 105 MB
• Form Factor: 3.5-inch full-height
• Interface: IDE PATA (40-pin connector)
• Data Transfer: PIO Mode
• Era: Mid-1990s (typical of Intel 486 and early Pentium systems)
• Status: Tested, formatted, and wiped — data securely erased
• Included: Drive only — no cables, mounting brackets, or mounting hardware

Applications

The Quantum 105AT is commonly used in vintage computer restoration and retro computing projects. Systems using IDE hard drives of this era include desktop PCs running MS-DOS, Windows 3.1, Windows 95/98, and early Linux distributions. These drives are still sought after by vintage computer collectors, museum exhibits, and hobbyists rebuilding period-accurate 486 and Pentium-era systems. The 105 MB capacity is adequate for operating systems and applications of that era, though users typically pair it with additional drives for expanded storage. This drive is also useful for data recovery projects or as a replacement drive in existing legacy systems.