Kingston's SDHC Class 4 is the manufacturer's basic line of high-capacity SD cards, available in 4GB, 8GB, 16GB and 32GB versions. SDHC cards feature greater storage capacity than regular SD cards – limited to 2GB capacities in Kingston's offerings – and are intended to hold hours of HD video or thousands of photographs. The Class 4 cards feature a minimum data transfer rate of 4MB/s, less than the mid-range, 6MB/s Ultimate line and top-end, 10MB/s Class 10. The cards are designed to be durable and reliable, with no moving parts. SDHC cards require devices supporting the format, and will not work with those supporting only SD.
- 4MB/s minimum data transfer rate
- No moving parts
- FAT 32 file format
- Requires host device supporting SDHC