USB Flash/SD Cards

USB Flash / SD / uSD / Compact Flash Cards

These devices are lightweight, portable data storage devices. Some are used as an alternative to external hard drives for portable data storage. Others are used in cameras and mobile devices to take and store digital photos, videos and other data. Most USB flash drives, secure digital (SD) cards and micro-SD cards use flash memory known as NAND (non-volatile) memory chips along with complex storage algorithms operating on a controller module to quickly store and recall your data as it is written to and read from the device.

An SD card might look like it contains a single chip to the average person but may contain one or more miniature NAND memory chips and a controller module all soldered to a tiny circuit board. In that way, it is similar to the design of a flash drive using a different form factor. The NAND flash memory chip stores all of your data while the controller organizes the storage sectors of the data using complex algorithms. When you plug your SD card into your computer, camera, or another device, data flows to and from the memory chip, organized and managed by the controller, just like a flash drive. The controller keeps track of failing sectors on the NAND chip as one of its many duties. An even smaller version of this, the micro-SD (uSD) card is considered a monolithic device where the memory modules and controller are bonded into a single piece of silicon.

Flash NAND Devices Can And Do Fail

A common misconception is that NAND devices will not fail because they are free of moving parts. However, these devices can and do fail. Some common failures are:

  • Firmware Corruption or Failure
  • Controller Failure
  • Physical Damage (Fracturing the NAND chip, or device connector)
  • Electrical Damage or Electrostatic
  • NAND Logical Failure due to Bad Sectors
  • Component Failure
  • Memory Wear Caused by Excessive Use
  • Accidental Formatting or File Deletion
  • Damage from Viruses and Malware
  • Fires, Floods and Other Disasters

Recovery of NAND

In some cases, these devices when logically failing can be recovered using specialized fixtures, equipment, and techniques without removing the NAND chips to decode them in order to recover data. In more severe cases, one or more NAND devices must be removed and decoded with specialized processes and equipment. Data Rescue MDs’ data recovery specialists routinely perform successful chip-off recoveries on these otherwise “dead” NAND based devices, recovering precious memories and business critical data alike. Contact Data Rescue MDs and we will provide a FREE data recovery evaluation and provide you with a detailed quote with your recovery options. If we are unable to recover your data, all fees are waived.

Contact us now to start your data recovery evaluation!

Flash Storage Devices



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    Hard Drives

    Our data recovery specialists are fully equipped to recover data from any type of internal or external hard drive, including damaged hard drives requiring clean room services.

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    Solid State Drives

    Data Rescue MDs SSD data recovery engineers use specialized tools, techniques and expertise to accomplish high SSD data recovery
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    Data Rescue MDs have been successfully recovering data from failed iMACS, PCs and all file systems for over a decade.

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    USB Flash/SD Cards

    We recover data and photos from most SD, micro-SD, XQD CF Cards and USB Flash Drives using micro soldering and specialized tools.

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    Mobile Devices

    Our engineers are very successful in recovering data from all types of liquid damaged and physically damaged mobile devices.

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Recover Your Data Today

When you need data recovered from your USB Flash/SD/uSD devices, choose the trusted experts at Data Rescue MDs to get reunited with your data! Call (847) 461-3282
Lose your fear, not your data!


Call our specialists at (847) 461-3282 or complete our form to begin the process of recovering your data.

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    Free Shipping

    If you cannot drop off your device, we can email you a pre-paid shipping label with packaging instructions.

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    Free Evaluations

    After we receive your device, our data recovery specialists begin the evaluation of your damaged device, free of charge.

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    No Recovery, No Fee.

    In the unlikely event your data is not recoverable, all fees are waived, including return shipping.

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I highly recommend Data Rescue MDs for technical proficiency, customer service, responsiveness, and attention to detail. I had critical information on a high-quality USB flash drive that was not backed up anywhere else (my bad!) and the flash drive crashed (who knew a thumb drive could do that to me?). I was in quite a panic but took the time to investigate data rescue services and quickly became convinced that Data Rescue MDs is the highest quality service available in the entire Chicago metro area. My experience with them confirms that. 100% of my crashed files were restored!

David C.

ABSOLUTELY AMAZING!!! I am so grateful I was able to find Data Rescue MDs!! My SD card failed making all 2,240 of my priceless pictures undetectable. The Data Rescue MDs team was so professional and helpful when they took my panicked call. I had it evaluated that day and the photos were retrieved over the next couple days. They were absolute lifesavers! I would recommend them over and over again!

Lisa M.