Seagate ST3300820ACE 300GB Ultra ATA/100 IDE front view Seagate ST3300820ACE 300GB Ultra ATA/100 IDE front view
Seagate ST3300820ACE 300GB Ultra ATA/100 IDE front view Seagate ST3300820ACE 300GB Ultra ATA/100 IDE front view
Seagate ST3300820ACE top view Seagate ST3300820ACE top view
Seagate ST3300820ACE angled view Seagate ST3300820ACE angled view
Seagate ST3300820ACE label view Seagate ST3300820ACE label view
Seagate ST3300820ACE 300GB Ultra ATA/100 IDE front view
Seagate ST3300820ACE 300GB Ultra ATA/100 IDE front view
Seagate ST3300820ACE top view
Seagate ST3300820ACE angled view
Seagate ST3300820ACE label view

Seagate

Seagate ST3300820ACE – 300GB | Ultra ATA/100 IDE | 7200RPM | 3.5" | Legacy HDD

$119.95
Tax included.

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

The ST3300820ACE is a 300GB Ultra ATA/100 IDE hard drive featuring 7200RPM spindle speed, 8MB cache, and 9ms average seek time in a 3.5" form factor. Built for mid-2000s consumer electronics and PC systems, it is ideal for legacy system restorations, vintage computing builds, and retro media applications. Compatible with IDE/PATA controllers supporting Ultra ATA/100 and master/slave configurations. The DB35.3 series features perpendicular recording technology and Tunneling Magnetoresistive heads for enhanced reliability in continuous operation environments.

All products from Anand International ship brand new and factory sealed. Volume and B2B pricing available for qualified buyers.
Specifications
  • Manufacturer: Seagate
  • Model: ST3300820ACE
  • Capacity: 300GB
  • Interface: Ultra ATA/100 IDE
  • Spindle Speed: 7200RPM
  • Cache: 8MB
  • Form Factor: 3.5"
  • Seek Time: 9ms average
  • Latency: 4.17ms
  • MTBF: 300,000 hours
  • Drive Type: Internal HDD
  • Warranty: 90 days
  • Shipping: Free domestic US shipping
  • Condition: Brand New, Factory Sealed
Product Features
  • 300GB formatted capacity with 512 bytes per sector for demanding storage workloads
  • Ultra ATA/100 interface with up to 100MB/s burst transfer rate
  • 7200RPM spindle speed for fast data access
  • 8MB cache buffer for optimized performance
  • Perpendicular recording technology for higher areal density
  • Tunneling Magnetoresistive recording heads
  • S.M.A.R.T. monitoring and reporting support
  • Master/slave configuration with cable select support
  • 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 IDE/PATA motherboards, controllers supporting Ultra ATA/100, legacy PC systems from 2005-2008 era, consumer electronics devices requiring IDE storage, and retro gaming builds. Not compatible with SATA controllers, modern motherboards without IDE headers, or systems requiring drives larger than 300GB capacity limits.
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.

300GB Ultra ATA/100 7200RPM 8MB Cache Factory Sealed

Why the ST3300820ACE is the right Legacy HDD

The DB35.3 series represents Seagate's advanced consumer electronics drive generation, featuring 7200RPM performance and perpendicular recording technology. This 300GB Ultra ATA/100 drive delivers 8MB cache and proven reliability for mid-2000s applications. Enhanced with high-speed data transfer rates up to 100MB/s, TMR recording heads, and state-of-the-art error correction algorithms. Perfect for vintage computing enthusiasts and legacy system integrators requiring authentic period-correct storage components.

Ultra ATA/100 High-Speed Interface

Features Ultra ATA/100 interface supporting burst data transfer rates up to 100MB/s using Ultra DMA mode 5. Optimized for IDE controllers and legacy PC systems requiring maximum PATA performance.

7200RPM Enterprise-Grade Performance

7200RPM spindle speed delivers fast access times and sustained throughput for demanding applications. Engineered for continuous operation in consumer electronics and professional environments.

Advanced Recording Technology

Incorporates perpendicular recording technology and Tunneling Magnetoresistive recording heads for enhanced data density and reliability. State-of-the-art cache and error-correction algorithms ensure data integrity.

Legacy System Compatibility

Supports Read/Write Multiple commands and autodetection of master/slave drives using cable select. Ideal for vintage computing builds, retro gaming systems, and period-accurate restorations.

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.