USB suggests Common Serial Bus. USB flash travel is made of flash memory facts storage unit built-in by using a USB one.one or two.0 interfaces and they are usually removable and rewritable. USB drives tend to be scaled-down than a floppy disk. It is light-weight bodyweight pretty much thirty g which can be lesser than a floppy disk. It can store as much as 256 GB with regular advancements in dimensions and price tag per capacity from which some allow one million write or erase cycles. The information retention cycle is 10 years. Capacities in USB-Drives like four GB USB-DRIVE, 8GB USB-DRIVE, and 128 GB USB-DRIVE and many others is accessible out there.