Quantum QML20000LDA 20.4GB ATA-100 front view Quantum QML20000LDA 20.4GB ATA-100 front view
Quantum QML20000LDA 20.4GB ATA-100 front view Quantum QML20000LDA 20.4GB ATA-100 front view
Quantum Fireball LCT20 top view Quantum Fireball LCT20 top view
Quantum QML20000LDA angled view Quantum QML20000LDA angled view
Quantum QML20000LDA 20.4GB ATA-100 front view
Quantum QML20000LDA 20.4GB ATA-100 front view
Quantum Fireball LCT20 top view
Quantum QML20000LDA angled view

Quantum

Quantum QML20000LDA – 20.4GB | ATA-100 IDE | 4500RPM | 3.5" | Legacy HDD

$150.00

Brand New, Factory Sealed | In Stock | Bulk Orders Available

The QML20000LDA is a 20.4GB ATA-100 IDE hard drive featuring 4500RPM spindle speed, 128KB cache, and 12ms seek time in a 3.5" form factor. Built for late 1990s and early 2000s desktop systems, it is ideal for legacy system restoration, vintage computing projects, and entry-level data storage applications. Compatible with standard ATA/IDE controllers and motherboards supporting ATA-100 interface with backward compatibility to ATA-66/33. The drive incorporates Quantum's Shock Protection System II and Data Protection System for enhanced reliability and data integrity in desktop environments.

All products from Anand International ship brand new and factory sealed. Volume and B2B pricing available for qualified buyers.
Specifications
  • Manufacturer: Quantum
  • Model: QML20000LDA
  • Capacity: 20.4GB
  • Interface: ATA-100 IDE
  • Spindle Speed: 4500RPM
  • Cache: 128KB
  • Form Factor: 3.5"
  • Seek Time: 12ms
  • Latency: 6.67ms
  • MTBF: 300,000 hours
  • Drive Type: Desktop IDE
  • Warranty: 90 days
  • Shipping: Free domestic US shipping
  • Condition: Brand New, Factory Sealed
Product Features
  • ATA-100 Ultra DMA interface with 100MB/s transfer rate
  • 128KB buffer cache for improved performance
  • 4500RPM optimized for quiet operation
  • Shock Protection System II (SPS II) technology
  • Data Protection System (DPS) for reliability
  • Low power consumption design
  • Standard 40-pin IDE connector
  • Enhanced acoustic performance
  • Direct replacement for legacy systems requiring IDE/ATA connectivity
  • 90-day Anand International warranty on all legacy stock
  • Free domestic US shipping included
  • Volume and B2B pricing available for qualified buyers
Compatibility

Compatible with desktop computers, workstations, and servers supporting ATA/IDE interface including systems with ATA-33, ATA-66, and ATA-100 controllers. Not compatible with SATA-only systems or laptops requiring 2.5" drives.
Shipping & Returns
  • Free Shipping: We currently offer free Economy Shipping within the continental U.S. with no minimum order required. Expedited shipping is available at standard carrier rates.
  • Same-Day Shipping: Order placed before 2PM PST will ship the same day. Orders received after this time will ship the following business day.
  • Hassle-Free Returns: If you're not completely satisfied with your purchase, simply return it within 10 days for a hassle-free refund or exchange.

20.4GB ATA-100 4500RPM 128KB Cache Factory Sealed

Why the QML20000LDA is the right Legacy Desktop HDD

The Quantum Fireball LCT20 represents the pinnacle of late 1990s desktop storage technology, combining proven reliability with optimized performance for mainstream computing applications. Built on Quantum's Low-Cost Technology platform, this drive delivers quiet operation and solid reliability at competitive prices. Its ATA-100 interface ensures maximum compatibility with period-appropriate systems while providing sufficient performance for typical desktop workloads of its era.

ATA-100 Interface Performance

Ultra ATA-100 interface delivers up to 100MB/s burst transfer rates for improved system responsiveness. Backward compatible with ATA-66 and ATA-33 systems.

Optimized 4500RPM Design

4500RPM spindle speed provides the ideal balance of performance and acoustic levels for desktop environments. Lower noise operation compared to higher-speed drives.

Enhanced Reliability Features

Shock Protection System II and Data Protection System technologies provide superior protection against data loss and drive failures. Built for continuous desktop operation.

Legacy System Compatibility

Perfect for vintage computing restoration projects and legacy system maintenance. Standard 40-pin IDE interface works with motherboards from the late 1990s through early 2000s.

New Old Stock with 90-Day Warranty

Available as brand new, factory sealed old stock units from Anand International with a 90-day warranty. Ideal for legacy system maintenance, vintage computing restoration, and hard-to-find replacement needs.

Frequently Asked Questions

Frequently asked questions for IDE, including information on usage, configuration, and compatibility.

1. What is an IDE hard drive?

An IDE (Integrated Drive Electronics) hard drive is a legacy type of storage device that connects to a computer using a 40-pin ribbon cable and Molex power connector. It was widely used before SATA drives became standard.
2. Can IDE hard drives be used in modern computers?

Most modern PCs do not have IDE ports. However, you can still use an IDE hard drive with a compatible IDE controller card or an IDE-to-SATA/USB adapter.
3. What devices are IDE hard drives compatible with?

IDE hard drives are commonly used in older desktops, servers, DVR systems, legacy industrial equipment, and other electronics that require ATA/100 or ATA/133 interfaces.
4. Are IDE and PATA the same thing?

Yes. IDE is also known as PATA (Parallel ATA). Both terms refer to the same interface standard, which uses wide ribbon cables to connect drives.
5. How do I know if my system supports an IDE hard drive?

Check if your motherboard has a 40-pin IDE connector. If not, you can use an adapter or external enclosure that converts IDE to SATA or USB.
6. What is the maximum capacity of an IDE hard drive?

Most IDE hard drives range from a few hundred megabytes to 500GB, though practical support depends on your system’s BIOS limitations.
7. Can IDE hard drives be used for external storage?

Yes. By using an IDE-to-USB adapter or external IDE enclosure, you can repurpose an IDE hard drive as an external storage device.