1. This adapter converts a Micro SD card to an MS Pro Duo card. 2. Supported capacity: Up to 64GB 3. Product dimensions: 32mm × 20mm × 1.6mm 4. Operating voltage: 3.2V 5. Operating temperature: -20 to 80 degrees Celsius 6. Please note: This is an adapter only and does not include storage capacity; a microSD/TF card must be inserted separately. 7. Usage Tip: If the PSP cannot read the adapter, try formatting it directly in the PSP device first.