Specification: *Interface: USB 2.0; *USB connection, support hot plug&play; *USB service voltage: 4.5v-5.5v; *No external power supply requird; *Support different types of os;Win98 / ME/ 2000/xp/visa/win7/win8. *Mac OS 9.x/ LINUX2.4 or above; *The solid state storage,shock proof and electromagnetic proof; *Write/delect protection switch; *Durable data storage; *The fast speed in write/read transfer;Easy to read and read in high speed , no need to drive/power supply just plug in; *Hardware requirements: PC with USB connection,notebook,mac; *Storage lifetime: more than 10 years;Using-class chip, can be erased repeatedly for 100,0000 times; *Capacity: 2TB 1TB 512GB 256GB