Description: No external power supply . Support different types of os. Solid State Storage, Shock proof and electromagnetic proof. Write protection switch?durable data storage?fast speed in write/read transfer. Hardware Requirement: PC with USB connection,Notebook,MAC. Package Includes: 1x Flash drive Note: Capacity flash memory products are usually shipped in accordance with 1MB = 1000KB, 1G = 1000MB computing, but the operating system using binary arithmetic 1MB = 1024KB, 1GB = 1024MB, so there are some differences between the display capacity and standard capacity memory products.This is calculation difference between manufacturer and our PC 4GB = approximately 3.6GB-3.8GB 8GB = approximately 7.4GB-7.6GB 16GB = approximately 14GB-15GB 32GB = approximately 28GB-30GB 64GB = approximately 58GB-60GB 128GB = approximately 110GB-120GB This is calculation difference between manufacturer and your PC, please Google 'USB Flash Drive capacity' to get more information
