According to the special needs of some customers, only a few hundred MB of U disk, we can achieve a small capacity as small as 256MB, the conventional capacity is 2GB, 4GB, 8GB demand, the capacity is not the same price. U disk display capacity prompt: due to computer binary calculation, 1GB = 1024MB, 1MB = 1024KB, and the actual calculation of our U disk is calculated in decimal, 1GB = 1000MB, 1MB = 1000KB, so we see the U disk on the computer The display capacity is different from the actual capacity required, and the actual available capacity is about 90% of the identified capacity.