The card is pre-formatted with FAT32 and mechanically makes a good impression. I've used a 1606 MB file for testing. Copying from HDD to SDHC lasts 175 seconds => write rate 9MB / s. Copying SDHC on hard drive takes 107 seconds => read rate 15 MB / s. These are very neat and exactly the values that specifies SanDisk on the packaging.