Original Memory Card 512GB Data Storage Flash Drive OTG TF Card 128GB For CCTV Micro SD Memory Card

Specifications Capacity:32GB/64GB/128GB/256GB/512GB/1TB/2TB Type: MicroSDXC Memory Card Read speed: Up to 100MB/s with UHS-1 interface Write speed: up to 60MB/s with UHS-1 interface Interface: UHS-I compatible with HS interface Speed Class: Class 10 Warranty: 3 years warranty About the actual capacity 32GB = Approximately 28GB-30GB 64GB = Approximately 58GB-60GB 128GB = approximately 115GB-118GB 256GB = Approximately 230GB-236GB 512GB = Approx. 490GB-500GB 1TB = approximately 970GB 2TB = about 1900GB Here is the difference in the calculation between the manufacturer and your PC, please use Google 'memory card capacity' for more information. The seller is using the decimal number of flash memory: 1 MB = 1,000KB, 1G = 1,000 MB Calculated the operating system with binary numbers: 1 MB = 1024KB, 1 GB = 1024 MB