1. Introduction
The OWC Atlas Pro CFexpress 4.0 Type A Memory Card is a high-performance, professional-grade storage solution designed for demanding content creation workflows. It offers exceptional speed and reliability for capturing high-resolution photos, fast burst RAW image sequences, and high-bitrate video recording up to 8K. This manual provides essential information for the proper use and care of your memory card.
2. Key Features
- High Performance: Engineered for professional filmmakers, photographers, and videographers, ensuring optimal performance with compatible cameras.
- Exceptional Speed: Achieves read speeds of up to 1850MB/s and write speeds of up to 1700MB/s, with a dependable minimum sustained write speed of 400MB/s.
- Robust Compatibility: Designed for seamless integration with Sony Alpha and FX cameras, including models like a1, a7SIII, a7IV, a7rV, a9III, FX3, FX6, FR7, and FX30. Also compatible with CFexpress Type A memory card readers and devices.
- VPG200 Certified: Ensures reliable performance across all Sony camera modes and supports the highest allowable settings in Sony Alpha, FX, and FR7 cameras.
- Durable Design: Fully compliant with CFexpress Type A 4.0 specifications and built to be impact, bend, shock, ESD, UV ray, and X-ray resistant.
- Innergize Software: Includes the Innergize health, performance, and field upgrade management tool for OWC Atlas Memory Cards.

Figure 2.1: Front view of the OWC 960GB Atlas Pro CFexpress 4.0 Type A Memory Card.

Figure 2.2: OWC Atlas Pro memory cards highlighting their rugged and tough construction.
3. Setup
- Check Compatibility: Ensure your camera or device supports CFexpress Type A memory cards. Refer to your device's manual for specific compatibility requirements.
- Insert Card: Locate the CFexpress Type A card slot on your camera or card reader. Gently insert the OWC Atlas Pro memory card into the slot with the gold contacts facing the correct direction, as indicated by the slot's design. Do not force the card.
- Format Card: For optimal performance and to ensure proper file system compatibility, it is highly recommended to format the memory card using your camera's or device's internal formatting function before initial use. This will erase all data on the card.
- Verify Recognition: After insertion and formatting, confirm that your device recognizes the memory card and displays its correct capacity.

Figure 3.1: OWC Atlas Pro memory cards demonstrating compatibility with Sony Alpha cameras.
4. Operating Instructions
Once the OWC Atlas Pro CFexpress 4.0 Type A Memory Card is properly set up and formatted, it is ready for use in your compatible device.
- Photo Capture: For high-speed continuous shooting of RAW images or large JPEG files, ensure your camera settings are configured to utilize the card's maximum write speed. The VPG200 certification guarantees sustained performance for demanding photo sequences.
- Video Recording: The card supports high-bitrate video recording up to 8K resolution. Select the appropriate video recording settings in your camera to match the card's capabilities. Monitor your camera's buffer status during recording to ensure smooth operation.
- Data Transfer: To achieve the advertised read speeds of up to 1850MB/s, use a compatible CFexpress Type A card reader that supports USB 3.2 Gen 2x2 or Thunderbolt 3/4 for optimal offload performance.

Figure 4.1: OWC Atlas Pro memory cards enabling improved ingest speeds for efficient workflow.
5. Maintenance and Care
Proper maintenance ensures the longevity and reliable performance of your OWC Atlas Pro CFexpress 4.0 Type A Memory Card.
- Handle with Care: Avoid dropping the card or subjecting it to excessive force. While designed to be robust, extreme physical shock can still cause damage.
- Keep Contacts Clean: Avoid touching the gold contacts directly. If necessary, gently clean them with a soft, lint-free cloth.
- Storage: Store the memory card in its protective case or a dedicated card wallet when not in use to prevent dust, scratches, and static discharge.
- Temperature: Avoid exposing the card to extreme temperatures or direct sunlight for prolonged periods.
- Eject Safely: Always safely eject the memory card from your computer or device before removing it to prevent data corruption.
- Firmware Updates: Utilize the included Innergize software to check for and apply any available firmware updates for your OWC Atlas memory card. This can improve performance and compatibility.
6. Troubleshooting
If you encounter issues with your OWC Atlas Pro CFexpress 4.0 Type A Memory Card, consider the following troubleshooting steps:
- Card Not Recognized:
- Ensure the card is fully and correctly inserted into the slot.
- Try inserting the card into a different compatible slot or card reader.
- Restart your camera or computer.
- Check if the card is locked (write-protected) if your device has such a mechanism.
- Slow Performance/Buffering Issues:
- Verify that your camera or card reader supports CFexpress 4.0 speeds. Older devices or readers may limit performance.
- Ensure your camera's firmware is up to date.
- Format the card in your camera. (Note: This will erase all data.)
- Check the card's health and performance using the OWC Innergize software.
- Data Corruption/Errors:
- Always safely eject the card before removal.
- Avoid removing the card during read/write operations.
- If data is corrupted, data recovery services may be an option, but prevention is key.
7. Specifications
| Attribute | Detail |
|---|---|
| Brand | OWC |
| Model Name | Atlas Pro Cfexpress 4.0 Type A Memory Card |
| Model Number | OWCCFXA4P00960 |
| Flash Memory Type | CFexpress |
| Memory Storage Capacity | 960 GB |
| Max Read Speed | 1850 MB/s |
| Max Write Speed | 1700 MB/s |
| Minimum Sustained Write Speed | 400 MB/s (VPG200 Certified) |
| Hardware Interface | CompactFlash (CFexpress Type A) |
| Special Features | Drop Proof, X-Ray Proof, Impact, Bend, Shock, ESD, UV Ray Resistant |
| Product Dimensions | 4.8 x 4 x 0.62 inches |
| Item Weight | 22.68 g (0.8 ounces) |
| UPC | 810149209208 |
8. Warranty and Support
The OWC 960GB Atlas Pro CFexpress 4.0 Type A Memory Card is backed by a 3-Year OWC Limited Warranty. For warranty claims, technical support, or additional product information, please visit the official OWC website or contact their customer service. Keep your proof of purchase for warranty validation.
OWC also provides the Innergize health, performance, and field upgrade management tool for OWC Atlas Memory Cards, which can be downloaded from their official support page.





