Samsung USB 3.1 flash drive 64GB 300 MB/s 128GB 256GB 400 won metal type C memory stick pendrive for computer

About capacity: 32GB = approximately 28GB-30GB 64GB = approximately 56GB-60GB 128GB = approximately 112GB-120GB 256GB = approximately 224GB-240GB This is calculation difference between manufacturer and your PC, please Google 'USB Flash Drive capacity' to get more information. Your PC says 1GB = 1.073741824 Billion tes where Market Defines 1GB = 1.00 Billion tes. Speed testing: 1) About USB Flash 3.1, please use a USB 3.1 USB Flash Drive to connect to USB 3.1 interface for the H2testw on your PC. If you use a USB 2.0 interface the speed will be much slower because: The bandwidth of USB 2.0 is 480 Mb/s, whereas the bandwidth of USB 3.0 is 5 Gb/s. 2) Actual speed may vary depending on host device conditions (card reader, adapter, USB port etc.) Write speed will be slightly lower. Tech Specs Product Type : USB Type-C Flash Drive Application: PC, notebook, Capacity :64GB/128GB/256GB (1GB=1Billion te) * Actual usable capacity may be less (due to formatting, operating system, applications or otherwise) Interface: USB 3.1 (backward compatible with USB 3.0/2.0) Dimension (WxHxD) :57.92X18.33X7.29mm Weight: Approx. 7.7g Warranty: 5 years limited

There could be some deviations due to manual measurement or slight color difference owing to photographing condition. Thank you for your understanding. If you do not understand what you can contact customer service at any time, I wish you a happy shopping.