Sony 2 GB High Speed Memory Stick PRO Duo Media (MSX-M2GN) (Retail Package) 2 GB storage capacity with 1850 MB available Designed to support read and write speeds of 80 Mbps on high speed enabled devices Included adapter allows compatibility with Memory Stick PRO media enabled devices Backwards compatible with most devices that use Memory Stick PRO Duo media Designed especially for compact digital cameras and the PSP Handheld Entertainment System