I was. So I contacted ScanDisk.
"Recently you requested personal assistance from our on-line support center. Below is a summary of your request and our response.
Thank you for allowing us to be of service to you.
Subject - The difference between micro cards
Response Via Email (Kenneth K.) 12/26/2012 11:20 AM
Thanks for emailing SanDisk Technical Support. It is our goal to make sure you have all the resources you need to get the most from your product.
I understand that you need a Class 10 SD card for your Go Pro camera and you want to know the difference between Ultra SD and Ultra Micro SD cards. Please note that Go Pro manufactures 3 models Go Pro Hero, Hero 2 and Hero 3. Since you did not specify the exact model we will let you know about the compatible cards supported by all these cameras.
The recommended cards for Go Pro Hero and Hero 2 are SanDisk Extreme Class 10 45MB/s and Extreme Pro Class 10 95MB/s SD/SDHC cards. These cameras can support upto 32 GB SD/SDHC cards. Please refer to the link mentioned below to know more about these cards:
Please go to the following link to know more about these cards:
The recommended cards for Hero 3 camera are SanDisk Ultra Class 10 and Extreme Pro Class 10 Micro SD/SDHC/SDXC cards. Please refer to the link mentioned below to know more about these cards:
Also, you can purchase the cards from the above specified links and you can use promo code Q229R to avail additional 10% discount.
Also note that apart from the physical size there is no difference between Ultra SD and Ultra Micro SD cards. Both the cards are 30MB/s Class 10 UHS-I cards. The Micro SD cards can also be converted to a full size SD card with a help of SD adapter.
Please be informed that the SD/Micro SD cards ranging from 128MB to 2GB are called SD cards and SD stands for Secure Digital. The SD/Micro SD cards ranging from 4 to 32 GB are called SDHC cards and SDHC stands for Secure Digital High Capacity. The SD/Micro SD cards ranging from 64GB to 2TB are called SDXC cards and SDXC stands for Secure Digital Extended Capacity
Also, you can visit http://kb.sandisk.com
, our online keyword searchable Knowledgebase, to easily find answers to your Technical Support and Customer Service questions for all of SanDisk's products. Simply enter your search terms and our Knowledgebase will search an extensive database of commonly asked questions as well as our online forums at http://www.sandisk.com/sandisk-support/forums
to provide you with the most complete answers possible.
SanDisk Technical Support
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SanDisk Technical Support
Customer By Web Form
I have a GoPro camera that I want to get a 64gb micro card for. What's the difference between an Ultra microSDXC card and an Ultra SDHC card ?
I need it to be a class 10 card.