Conner CFA850A 850MB ATA-33 IDE front view Conner CFA850A 850MB ATA-33 IDE front view
Conner CFA850A 850MB ATA-33 IDE front view Conner CFA850A 850MB ATA-33 IDE front view
Conner CFA850A top view Conner CFA850A top view
Conner CFA850A angled view Conner CFA850A angled view
Conner CFA850A label view Conner CFA850A label view
Conner CFA850A 850MB ATA-33 IDE front view
Conner CFA850A 850MB ATA-33 IDE front view
Conner CFA850A top view
Conner CFA850A angled view
Conner CFA850A label view

Conner

Conner CFA850A – 850MB | ATA-33 IDE | 4500RPM | 3.5" | Desktop HDD

$99.95

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

The Conner CFA850A is an 850MB ATA-33 IDE hard drive featuring 4500RPM spindle speed, 256KB segmented cache, and 12.0ms average seek time in a 3.5" slimline form factor. Built for mid-1990s PC/AT systems, it is ideal for legacy desktop computing, vintage system restoration, and retro gaming builds. Compatible with IBM PC/AT and equivalent systems supporting ATA-2 Enhanced IDE controllers with Universal Translate Mode. Part of Conner's Filepro Advantage series, this drive incorporates Reed-Solomon error correction and rotary voice coil actuator technology for reliable continuous operation in desktop environments.

All products from Anand International ship brand new and factory sealed. Volume and B2B pricing available for qualified buyers.
Specifications
  • Manufacturer: Conner
  • Model: CFA850A
  • Capacity: 850MB
  • Interface: ATA-33 IDE
  • Spindle Speed: 4500RPM
  • Cache: 256KB Segmented
  • Form Factor: 3.5" Slimline
  • Seek Time: 12.0ms average
  • Latency: 6.7ms
  • MTBF: 300,000 hours
  • Drive Type: Desktop HDD
  • Warranty: 90 days
  • Shipping: Free domestic US shipping
  • Condition: Brand New, Factory Sealed
Product Features
  • 850MB unformatted capacity
  • ATA-2 Enhanced IDE interface
  • 4500RPM spindle speed
  • 256KB segmented cache buffer
  • Reed-Solomon error correction
  • Universal Translate Mode support
  • Rotary voice coil actuator
  • Low-profile 3.5" slimline design
  • 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 IBM PC/AT and equivalent systems supporting ATA-2 Enhanced IDE controllers, 486 and Pentium-class computers with 40-pin IDE connectors. Not compatible with modern SATA systems or systems requiring SCSI interface.
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.

850MB ATA-33 IDE 4500RPM 256KB Cache Factory Sealed

Why the CFA850A is the right Desktop HDD

The Conner CFA850A represents the Filepro Advantage series, delivering superior performance over standard IDE drives of its era. With 4500RPM speed and 256KB cache, it significantly outperforms competing drives like the CFS850A series. Released in 1995, this drive established new benchmarks for desktop storage reliability and remains the preferred choice for authentic vintage computing restorations.

High-Performance ATA-33 IDE Interface

Enhanced IDE controller with ATA-2 Fast protocol support delivers 16.7MB/s external transfer rates. Universal Translate Mode enables flexible cylinder/head/sector configurations up to drive capacity limits.

4500RPM Spindle with 256KB Cache

Advanced 4500RPM rotation speed paired with 256KB segmented cache buffer provides superior data access performance. Significantly faster than standard 3600RPM drives with only 64KB cache.

Reed-Solomon Error Correction

On-the-fly Reed-Solomon error detection and correction ensures data integrity. Single burst errors of 11 bits or less are corrected without performance degradation.

Rotary Voice Coil Actuator Technology

Precision rotary voice coil actuator mechanism delivers 12.0ms average seek time. Engineered for 300,000-hour MTBF with 40,000 start/stop cycle capability.

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.