8GB Sandisk MicroSDHC Memory Card

Compatibility
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I bought this along with a Sandisk MicroSD-to-MiniSD Adapter (Bulk Static Package) for use with my Nokia N810 Internet Tablet. It was detected fine after insertion, not requiring any further installation or OS updates to detect and use all 7.44GB (see below). Make sure your device specifically supports SDHC (different from regular SD) type memory cards before you buy or else you might be limited to using only 2GB or 4GB of space (if it works at all). Also, this card should function perfectly in any devices that accept full-size SDHC cards, simply insert the MicroSDHC card into a MicroSD-to-MiniSD adapter, and insert that into a MiniSD-to-SD adapter.

Speed
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This is a Class 4 card meaning that it gets real-world performance of about 4MB (1 MB = 2^20 bytes) sustained write speed, which is about what I've experienced with it. It feels quite acceptably fast for most applications. For example, playing back WVGA... Read more

The key to this review is:

"I then formatted the memory card just as I do to all new memory cards, and the memory went down to 3.6 GBs."

The poster must have reformatted the card to FAT16 from the factory format of FAT32. FAT16 only supports a maximum of 4GB, which is why the card seems to have lost half of its capacity. If the reviewer had left the formatting alone, or reformatted as FAT32, he/she would still have the approximately 8GB of capacity.

The card worked perfectly with my Australian Nokia N95, flashed with the latest Nokia firmware at the time (something to the effect of 20.0.0.15). Did not have to do anything special, just plugged it in, checked the memory and sure enough, there it was at the correct size.

The included USB adapter is really handy, allowing the card to be plugged straight into a USB port without the need for MicroSD to SD adapter followed by an SD to USB or card reader. So it is also useful as a USB key.