Product Specifications： Storage Type: SD (TF) CardCapacity: 128GB / 256GB / 512GB / 1TB / 2TBCompatible Devices: Dash cam, tablet, reading pen / early learning machine, mobile phone, camera, PSP / handheld game consoleMax Read Speed: 30MB/sMax Write Speed: 10MB/sKind Tips： The default format on a computer is FAT32. If your device does not support this format, you may reformat the card to exFAT or NTFS. This memory card is not compatible with Nintendo and other game console devices. Flash memory products are generally manufactured using the decimal standard: 1MB = 1000KB, 1GB = 1000MB. However, operating systems use binary calculation: 1MB = 1024KB, 1GB = 1024MB. This results in a slight difference between the displayed capacity and the labeled capacity. 128GB: approx. 110GB–120GB 256GB: approx. 230GB–240GB 512GB: approx. 455GB–465GB 1TB: approx. 955GB–965GB