About REAL Capacity 32GB = approximately 28GB-30GB This is calculation difference between manufacturer and your PC, please Google 'Memory card capacity' to get more information. For your reference Your PC says 1GB = 1.073741824 Billion bytes where Market Defines 1 GB = 1.00 Billion bytes. TECH SPECS Product Type :USB 3.0 Flash Drive Application: PC, Notebook Capacity :32GB(1GB=1Billion byte) * Actual usable capacity may be less (due to formatting, operating system, applications or otherwise) Interface: USB 3.0 Connector :Standard A Dimension (WxHxD) :60mm *21mm * 9mm Weight: Approx. 20g Warm tips Please verify all Flash disks by H2testw on PC Please test accordng to the port type to test flash disks, if not , speed will be reduced **flash disk is greatly affected by card reader, adapter, USB port etc. Low quality device will 100% slow down card speed. **Based on internal testing; performance may be lower depending on host device, interface, usage conditions and other factors.