Dual MicroSD MicroSDHC to MS PRO DUO Adapter. Converts Two MicroSD or MicroSDHC Cards To MS PRO DUO This is a MS pro duo adapter, converts Micro SD/SDHC to MS Pro Duo. (Support Micro SD, Micro SDHC card) Support maxium 64GB MicroSD card, Insert the MicroSD card in adapter, You will get a same capacity MS Pro duo memory card for your SONY devices. Support 512MB-64GB MicroSD/MicroSDHC Card, giving more options to adjust the capacity Compatible with PSP and most Sony storage devices products Transferring speed of the adapter is same as the speed of the inserted memory card.