Overview: 1) BM PC/A8T or compatible Desktop or Laptop or Mac computer with USB port 2) Microsoft Windows 98 SE/ME/2000/XP or above 3) Linux kernel 2.4 or above 4) MAC OS 9.X or above Capacity: 64M/128M/256M/512M/1G/2G Color: Black, White, Blue,Red, Silver,Green,brown,gold Material: Plastic, Aluminium Alloy Dimension: 58mm*25mm*8mm