micro memory sd card 128gb 32gb 64gb 256gb 16gb 8gb 4gb sd card sd/tf flash card 4 8 16 32 64 128 256 gb memory sdcard for phone

the factory capacity of memory card and u disk products is usually calculated according to 1mb=1000kb, 1g=1000mb, and the operating system uses a binary algo- rithm: 1mb=1024kb, 1gb=1024mb. therefore, there is a certain amount between the display capacity of the flash memory product and the nominal capacity the difference is about 90%. therefore, the general 8g u disk does not actually reach 8g, most of them are about 7.2g. this is the normal range of capacity. (standard capacity 4gb/8gb/16gb/32gb/64gb, etc., the actual use capacity is about 3.6g/7.2gb/14.4gb/28.8gb/57.7gb, etc.,and so on).syi