USB 2.0 Flash Drive Metal mini Pendrive 16GB 32GB 64GB 128GB USB Stick cle usb Pen Drive Key Ring USB FlashFeatures: Durable data storage: 32GB 64GB 128GB USB 2.0 high-speed data transfer performance Plug and play: No need drive/power supply only plug in A-class chip: Can be erased repeatedly for 100,0000 times Operating system: Windows 98 / ME / 2000 / XP / Vista / 7 / 8 / 10, Mac OS 9.X, Linux2.4 or above Writing speed: 5 Mb/s-15 Mb/s. The rate of performance depends on the different operation system available and various flash adopted, so the speed maybe different. Real capacity: Capacity flash memory products are usually sent in accordance with 1 MB = 1000 KB, 1 GB = 1000 MB computing, but the operating system using binary arithmetic 1 MB = 1024 KB, 1 GB = 1024 MB. 32GB = approximately 27GB--30GB 64GB = approximately 57GB--60GB 128GB = approximately 95GB--119GB This is calculation difference between manufacturer and your PC, please search for 'USB flash drive capacity' to get more information. Package: 1 X USB 2.0 Flash Drive Notice: 1.Do not Insert the pendrive with brute force and frequently,it is easy to damage the plug;do not pull the disk when access to data,or likely to cause data lose;try to pull it after disconnect disk. 3.Please make sure the max capacity your mobile or computer can support,if exceed the max capacity it can support,it can not read the pen drive.