SanDisk Ultra II 8GB Class 4 SDHC Memory Card SanDisk Ultra II 8 GB Class 4 SDHC Memory Card General Features: 8 GB capacity Secure Digital High Capacity (SDHC) form factor (not backwards compatible with SD) Class 4 speed rating (4.0 MB/sec) Write protection switch Fast read speeds of up to 15 MB/sec (may vary depending on device); write speed lower Plug and play