Converts your MicroSD or MicroSDHC Card into a MS Pro Duo Card for use with Pro Duo enabled devices, including PSP. Contains two MicroSDHC memory slots each with a capacity of up to 16GB for a total capacity of 32GB. *IMPORTANT* NOTE: 1. Please FORMAT MicroSD cards with CR-5400 adapter by SONY product or PSP before using the card.(DO NOT FORMAT by PC) 2. Keep Micro SD cards in CR-5400 adapter all time for data transfer. DO NOT transfer data from Micro SD cards without CR-5400 adapter to any other device(PC) . It will cause data corrupt. 3. Most of card readers DO NOT support high capacity Memory Stick (Duo) memory cards. Please use USB cable to transfer from PSP or SONY products to PC or other device. 4. For customers using PSP system software version 2.80 or earlier: PSP systems with system software version 2.80 or earlier do not correctly recognize high-capacity Memory Stick PRO DuoTM with more than 4 GB of free (recordable) memory space.

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