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Comments about SanDisk 32GB Extreme SDHC Memory Card Two Pack:
Haven't used them yet so 5 stars may be premature.
This is a two-pack but they came as 2 separate items. Advertised as Class 10, which is what I wanted. I didn't want the newer "UHS-1" class because I thought they would only work in devices designed to use SDXC, according to sdcard organization. Well, the packaging says "SDHC UHS-1" and also "Class 10". After further research I think all is OK. Apparently there is an "SDHC UHS-1" and a "SDXC UHS-1". I think if this was a true UHS-1 it would have a "U" with a "1" inside of it symbol but it has the "10" in a circle- which is what I want.
Sooooo..... I wanted SDHC Class 10 cards and looks like that's what I got. The actual cards say: "Extreme HD Video", "SDHC-I", and have the circled 10 symbol on them. I just had to research and read up on the new UHS-1 class and SDHC vs SDXC and I urge you to do the same.
Bottom line- as best as I can determine, these are Class 10 SDHC cards and should work in my devices (cameras) that accept SDHC cards. They may also have something extra that gives them the SDHC-I designator but I don't know what that is.