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My SD Card is write protected – how do I unprotect it?

SD cards have a write lock. This is a switch on the side of the card. The DOWN position is write protect ON and the UP position is write protect OFF.

To use the device in a camera the position of the switch must be UP. It is a good idea to write protect a card with important data.

Why does my Memory Card show less capacity than stated?

There may be a few reasons why your drive’s capacity may be lower than stated.

The first is that when your operating system formats your drive, it leaves some overhead storage for the file system, boot data, wear levelling, and “shadow storage”.

Second, computers and laptops often come with several partitions, including a hidden recovery partition. There is a chance that some of the space is taken up by this recovery partition.

The third, and the main reason, is due to the difference between how memory manufacturers, PC / Laptop manufacturers, and Windows / Android systems measure storage. Memory manufacturers use a decimal system and PC / Laptop manufacturers & Windows / Android systems use a binary system.

In simple terms:

Memory manufacturers see:

  • 1KB = 1000 bytes
  • 1MB = 1,000KB (1,000,000 bytes)
  • 1GB = 1,000MB (1,000,000,000 bytes)
  • 1TB = 1,000GB (1,000,000,000,000 bytes).

PC / Laptop manufacturers and Windows / Android systems see:

  • 1KB = 1024 bytes
  • 1MB = 1024KB (1,048,576 bytes)
  • 1GB = 1024MB (1,073,741,824 bytes)
  • 1TB = 1024GB (1,099,511,627,776 bytes)

This difference in measurement leads to a difference in how much space is shown on some PCs, Laptops, and Phones. This difference increases as the capacity of the drive increases between MBs, GBs, TBs.

Stated Capacity on Drive Windows PC/Laptop/Android Capacity Shown
1GB 0.93 GB
2 GB 1.9 GB
4 GB 3.7 GB
8 GB 7.5 GB
16 GB 14.9 GB
32 GB 29.8 GB
64 GB 59.6 GB
128 GB 119.2 GB
256 GB 238.4 GB
512 GB 476.8 GB
1 TB 0.9 TB
2 TB 1.8 TB
4 TB 3.6 TB
8 TB 7.3 TB
16 TB 14.6 TB
When I plug in my Integral USB Flash Drive, my computer displays a “USB device not recognized” message, what does this mean?

There can be a various causes to this problem. Follow the steps below to try and solve the issue:

  • Firstly ensure you are plugging the USB Flash Drive directly into the PC or notebook and ensure you have the latest USB drivers for your operating system
  • Try plugging your USB Flash Drive into another USB port on your PC/notebook. You could test the USB on another PC or notebook if available
  • Keep your USB Flash Drive plugged in and perform a full ‘Windows Update’ to check for any missing or newer drivers for your computer. To do this, open Internet Explorer and click Tools> Windows Update and follow the onscreen instructions

If you are still experiencing problems, please fill in the tech support form and we will help with your issue.

Which Crypto USBs are compatible with Mac or Windows?

The table below shows which systems our Crypto USBs are compatible with:

Crypto USB table


Please note, our Crypto USBs are fully compatible with Intel-based Mac computers and MacBooks running MacOS Version 10.13: “High Sierra” and above. Our Crypto USBs have a 5 year warranty and OS versions before Version 10.13: “High Sierra” are not supported.

If the FAQs cannot answer your support question, please complete and submit the support form below and a member of our Technical Support team will be in touch. We take pride in our highly rated customer service.