U DISK USB2.0 Interface Yellow Duck Cartoon Style Portable Electronic Storage Medium Memory Stick for Computer(Yellow Duck Circle 16GB) Item Type: U DISK Material: Plastic Applicable: No Driver Required, (above for Win 98) Supports for Win 98, for Win me, for Win 2000, for Win XP, for OS X 9.x, for OS X and for Linux2.4.x Interface: USB2.0 Computer: for IBM PC, for OS X PC or Laptop etc Speed: Maximum Write Speed 10-20 (MB/s), Maximum Read Speed 4-10 (MB/s) Application: Backup Files, Videos and More The Displayed Capacity and the Nominal Capacity Are Different Because the Calculation Method is Different Manufacturer Standard: 1GB / 1000MB / 1MB = 1000KB Regarding Available Capacity: Please Note the Memo on Storage Product Capacity: 4GB=Approx. 3.4GB-3.8GB 8GB=Approx. 7.4GB-7.6GB 16GB=Approx. 14.5GB-15.5GB 32GB=Approx. 28GB-30GB 64GB=Approx. 58GB-60GB 128GB=Approx. 119GB-124GB 256GB=Approx. 249GB-250GB 512GB=Approx. 498GB-500GB