Cartoon box volume : 48.5 * 36 * 25CM 100 / Box product description : 1 : USB1.1/2.0 interface used to support hot-plug, plug-and-play 2 : There is no need for external power. LED lights are shown. 3 : capacity : 32M 64M 128M 256M 512M 1G 4 : use a variety of operating platforms WIN98/SE/ME/2000/XP. MAC OS8.6 & HIGHER, UNIX, LINUX2.4 or later (Windows 98 to install drivers) 5 : electronic storage media. Without mechanical components, anti-shock, anti - electromagnetic interference. 6 : encryption software support, dual-function. 7 : to preserve data security, long-term (10 years or more) 8 reading and writing speed : USB : 1.1 Write Speed : 860KB / s read rate : 960KB / s write speed of 2.0 : 11MB / s read speed : 12MB / s 9 : portable. 10 : work environment temperature; -40 ° C ~ +70 ° C. Storage temperature : -50 ° C to +80 ° C.