The BitBox02 hardware wallet requires a compatible microSD card for secure backups. To ensure smooth operation, follow these recommendations when selecting and using a microSD card.
Supported microSD Card types
- The BitBox02 supports standard microSD cards of type SDHC.
- MicroSD cards of type SDXC are not supported.
- There is no minimum size requirement, as the backup file is very small.
Recommended microSD cards
For reliability and longevity, choose a microSD card from a reputable brand such as:
- SanDisk
- Transcend
Avoid high-speed SD cards, as they can sometimes cause issues. The best choice is an SD card with a speed class of 10 or lower.
Formatting guidelines
Before using a microSD card with your BitBox02, ensure it is formatted correctly:
- Use MS-DOS (FAT) or vFAT file system.
- If the card is not preformatted this way, format it manually.
Important security practices
- Never plug the microSD card into your computer after formatting. Only use it with your BitBox02 to maintain security.
- Verify your backup every 6 to 12 months to ensure it remains accessible and intact.
By following these recommendations, you can ensure a smooth experience with your BitBox02 and keep your backups safe.