Specifications: 1) Available capacities: 64MB, 128MB, 256MB, 512MB, 1GB, 2GB,4GB 2) Hi-speed USB 2.0 certified3) Compatible with USB 1.1 4) USB main interface speed rate can reach 12Mbps5) Speed: Read: 960KB/s(1.1) / 8-33MB(2.0) Write: 860KB/s(1.1) / 2-18MB(2.0)6) LED indicates power, read/write7) Shock resistance: 1,000g8) Min. data retention: 10 years9) 2 years warranty10) O/S Requirement: Win98/98E (Driver required) Windows ME/2000/XP Mac OS 9.0 and above Linux 7.X/8.X11) Operation Temperature: 0~55C12) Packing: 100pcs/CTN, CTN/ 46*32.5*32.5cm13) Customer Logo printing.