SanDisk® Global Customer Support (US)

Extreme Pro SDXC & SDHC UHS-II
Capacities: 64GB, 32GB, 16GB  
Read/write speeds: 280MB/s / 250MB/s
Speed rating: UHS Speed Class 3
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Extreme Pro SDXC & SDHC UHS-I
Capacities: 64GB, 32GB, 16GB, 8GB 
Read/write speeds: 95MB/s (633x) / 90MB/s (600x) 
Speed rating: UHS Speed Class 1
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Extreme PLUS SDXC & SDHC UHS-I
Capacities: 128GB, 64GB, 32GB, 16GB, 8GB 
Read/write speeds: 80MB/s / 30MB/s
Speed rating: UHS Speed Class 1
 

Extreme Pro SDHC UHS-I
Capacities: 32GB, 16GB, 8GB 
Read/write speeds: 45MB/s (300x)
Speed rating: UHS Speed Class 1

Extreme SDHC
Capacities: 32GB, 16GB, 8GB  4GB
Read/write speeds: 30MB/s (200x)
Speed rating: Class 10
 

Ultra SDXC & SDHC 30MB/s
Capacities: 64GB, 32GB & 16GB
Read/write speeds: 30MB/s (200x)
Speed rating: Class 10





Ultra SDXC & SDHC
Capacities: 64GB, 32GB, 16GB, 8GB
Read/write speeds: 20MB/s (133x)
Speed rating: Class 6





Standard SDHC/ SD
Capacities: 32GB, 16GB, 8GB, 4GB & 2GB

SDXC FAQs:
1. What is 'SDXC'?
2. Will SDXC cards work on SDHC host devices?
3. What operating systems support SDXC / exFAT file system? 

SDHC/ SD FAQs:
1. My computer/reader can't read my 4GB - 32GB SDHC card, what do I need to do?
2. What is 'SDHC'?
3. Why do I get a 'The disk is write-protected' message when I transfer files to my memory card?
4. What's the difference between speed rating and class rating?
5. How do I recover missing or deleted files on my memory card?
6. How many pictures can I put in my memory card?
7. How do I do a quick format on a memory card?
8. What's the difference between FAT and NTFS?
9. Can I use my SD card reader to read my 8GB SDHC card?
10. I'm getting a memory card error when using Extreme III SDHC card on my Canon camcorder