1. Product Overview
The G-Technology Atomos Master Caddy HD is a 1TB hard drive designed for use with Atomos video workflows. It provides storage for 4K, HDR, and other demanding content formats, facilitating efficient data transfer from Atomos recorders to post-production environments.
Key Features:
- Integration with G-Technology’s modular Evolution Series ecosystem.
- Guaranteed compatibility with Atomos Recorders.
- Cable-free data transfer from Atomos recorder to post-production.
- Optimized for 4K, HDR, HD, and other demanding content formats.
- Supports data transfer rates up to 136 MB/s (performance may vary).
- Ready for immediate use, no assembly required, pre-formatted for Mac.

Image 1.1: Top view of the G-Technology Atomos Master Caddy HD.
2. Package Contents
Verify that all items are present in the package:
- Atomos Master Caddy HD by G-Technology (1TB)
- Quick Start Guide
- 3-year limited warranty information

Image 2.1: Front view of the G-Technology Atomos Master Caddy HD product box.
3. Setup Guide
The G-Technology Atomos Master Caddy HD is designed for direct integration with compatible Atomos recorders. Follow these steps for initial setup:
- Prepare the Atomos Recorder: Ensure your Atomos recorder is powered off before inserting or removing any storage media.
- Insert the Master Caddy: Align the G-Technology Atomos Master Caddy HD with the caddy slot on your Atomos recorder. Gently slide the caddy into the slot until it clicks into place. Ensure it is fully seated to establish a secure connection.
- Power On and Verify: Power on your Atomos recorder. The recorder should detect the Master Caddy HD. Refer to your Atomos recorder's manual for specific instructions on verifying storage detection and formatting if necessary.
Note: Some users have reported that the caddy can fit very tightly in certain Atomos recorder models. Insert it carefully to avoid excessive force during insertion or removal. If removal is difficult, ensure the caddy is not pushed in beyond the necessary point for connection.

Image 3.1: View of the G-Technology Atomos Master Caddy HD showing the SATA data and power connectors.
4. Operating Instructions
Once the Master Caddy HD is installed and recognized by your Atomos recorder, it is ready for use in your video production workflow.
Recording with Atomos Recorders:
- Configure your Atomos recorder settings for your desired video format (e.g., 4K, HDR, HD).
- Initiate recording as per your Atomos recorder's operational guide. The Master Caddy HD will store the recorded footage.
- Monitor the remaining storage capacity on your Atomos recorder's display.
Data Transfer to Computer:
To transfer recorded data to a computer for editing or backup, use a compatible G-Technology ev Series Reader Atomos Master Caddy Edition (sold separately).
- Remove Caddy: Power off your Atomos recorder and carefully remove the Master Caddy HD from its slot.
- Insert into Reader: Insert the Master Caddy HD into the G-Technology ev Series Reader.
- Connect Reader: Connect the ev Series Reader to your computer using the appropriate cable (e.g., USB 3.0).
- Access Data: Your computer should recognize the Master Caddy HD as an external storage device. You can then access and transfer your video files.
The Master Caddy HD supports transfer rates up to 500MB/s when used with compatible hardware and software configurations, enabling fast content transfers and backups.
5. Maintenance and Care
Proper care ensures the longevity and reliable performance of your G-Technology Atomos Master Caddy HD.
- Handling: Handle the caddy with care. Avoid dropping it or subjecting it to strong impacts, as this can damage the internal hard drive.
- Storage: Store the caddy in a cool, dry environment away from direct sunlight, extreme temperatures, and strong magnetic fields.
- Cleaning: Use a soft, dry, lint-free cloth to clean the exterior of the caddy. Do not use liquid cleaners or solvents. Ensure connectors are free of dust and debris.
- Ejection: Always safely eject the drive from your computer's operating system before physically disconnecting it to prevent data corruption.
6. Troubleshooting
If you encounter issues with your G-Technology Atomos Master Caddy HD, consider the following:
Drive Not Recognized by Atomos Recorder:
- Ensure the caddy is fully and correctly inserted into the Atomos recorder slot.
- Verify that the Atomos recorder is powered on and functioning correctly.
- Check the Atomos recorder's settings to ensure it is configured to detect external storage.
- Try inserting the caddy into a different compatible Atomos recorder or an ev Series Reader to rule out an issue with the recorder itself.
Drive Not Recognized by Computer:
- Ensure the ev Series Reader (if used) is properly connected to your computer and powered on.
- Try a different USB port or cable on your computer.
- Check your computer's Disk Management (Windows) or Disk Utility (Mac) to see if the drive is detected but unformatted or has a partition issue.
- The drive is pre-formatted for Mac. If using Windows, reformatting may be required (this will erase all data).
Slow Data Transfer Speeds:
- Ensure you are using a high-speed connection (e.g., USB 3.0 or faster) between the ev Series Reader and your computer.
- Verify that your computer's hardware and software components are optimized for high-speed data transfer.
- Close other applications that may be consuming system resources or bandwidth.
If issues persist, consult the G-Technology support website or contact customer service.
7. Technical Specifications
| Feature | Specification |
|---|---|
| Model Number | 0G05218 |
| Storage Capacity | 1 TB (Hard Drive) |
| Material | Metal |
| Compatible Devices | Atomos Recorders, Desktop (via ev Series Reader) |
| Data Transfer Rate | Up to 500 MB/s (performance varies) |
| Connectivity Technology | Integration (with Atomos recorders) |
| Operating System Compatibility | Mac OS 10.9+; Windows 7+ (with reformat) |
| Item Weight | 6.4 ounces (0.4 Pounds) |
| Product Dimensions (LxWxH) | 4.09 x 2.91 x 0.47 inches |
| Hardware Interface | SATA (internal to caddy) |
| Color | Black |
| Manufacturer | G-Technology |
8. Warranty and Support
The G-Technology Atomos Master Caddy HD comes with a 3-year limited warranty. Please refer to the warranty information included in your package for full terms and conditions.
For technical support, product registration, or additional information, please visit the official G-Technology support website or contact their customer service department. Keep your purchase receipt and product serial number available when seeking support.