Pls note: in the process of usb flash drive working, LED light will flashing. This is normal appearance. Hope you can understand. 
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<br />High quality
<br />Plug and Play
<br />No external power supply required
<br />Portable and Lightweight
<br />8GB 16GB 32GB 64GB
<br />USB 2.0
<br />Support Windows 98/ME/2000/XP/Vista/Win7/MAC/Linux etc.
<br />Suitable for PCs, Macs, and Laptops
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<br />Tips:
<br />Flash memory vendors are using decimal arithmetic: 1MB = 1000KB, 1G = 1000MB calculated, but the operating system is using binary arithmetic: 1MB = 1024KB, 1GB = 1024MB. so there are some differences between display capacity and nominal capacity of flash memory products.However, this is allowed to exist. Please do not doubt his authenticity.
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<br />About capacity:     
<br />8GB=approximately 6.9GB-7.7GB       
<br />16GB=approximately 14GB-15.5GB      
<br />32GB=approximately 28GB-31.2GB
<br />64GB=approximately 59GB-62.3GB