How does shipping work for orders on MRO Exchange?

Most orders ship within 1–2 business days via UPS. Larger equipment ships via freight carrier, and customers can use the shipping estimator on the product page for a location-specific quote. Local pickup is also available at the Fairfield, IL facility, typically ready within 4 hours.

What payment methods does MRO Exchange accept?

MRO Exchange accepts all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available, with payment due prior to shipment. Custom terms are available for established accounts.

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Quantum IDE Hard Drive CX64A011 6.4 GB, 3.5 in., ATA-66, 5400 RPM

$139.00 USD

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ConditionSurplus - Untested MPNCX64A011 Stock #0226-00712

Photos reflect current condition. Items differing from description may be eligible for return or refund — see our condition guide.

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Estimated package weight: 5.0 lbs

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Used in legacy CNC controllers, industrial PCs, and vintage computing systems, the Quantum Fireball CX is a 3.5-inch IDE hard drive with a 6.4GB capacity and an ATA-66 (Ultra ATA/66) interface. MPN CX64A011, PCB revision 01-B, this unit is from the Fireball CX 3.5 Series and operates at 5400 RPM with a 512KB cache and an average seek time of 9.5 ms. Power requirements are 5V and 12V at 650/720 mA as shown on the nameplate label. The drive supports multiple CHS configurations including 6.4 GB at 13328/15/63 and up to 20.4 GB translated mode at 16383/16/63, providing compatibility with a range of BIOS implementations. The jumper configuration table on the label provides settings for Master (factory default), Slave, and Cable Select modes. The PCB label identifies the board as 6.4AT with part number CX64A011 Rev 01-B. Manufactured in Singapore, the unit carries CE, UL, CSA, and TUV Rheinland certifications as noted on the label. This drive is commonly sought as a direct replacement in systems requiring a specific legacy ATA interface and small-capacity storage, including industrial terminals and embedded PC platforms originally shipped with Quantum Fireball series drives.

Stock # 0226-712

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Shipping & Handling

Most orders ship within 1–2 business days via UPS, but expedited same-day handling is available as an add-on to orders in cart. Larger equipment ships via freight carrier. Use the shipping estimator above for a location-specific quote. Local pickup is also available at our Fairfield, IL facility, typically ready within 4 hours.

Returns & Condition

All items are sold as-described based on the photos and condition listed. If an item arrives differing from its description, it may be eligible for return or refund. See our full condition guide for details on our grading terms.

Payment Options

We accept all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available by selecting "Purchase Order / Wire Transfer" at checkout. Payment is due prior to shipment. Contact us for custom terms on established accounts. Tax exemptions are honored if proper documentation is provided.