... and a cable•Battery: Built-in Rechargeable lithium-ion polymer•Interface: USB2.0 high speed •Working humidity: 20% ~90 ... PC or compatible PC, Notebook or Macintosh with USB portDriver installationOnly required for Windows98/SEOperation SystemWindows2000/XP/9X ... /ME/NT4.0,WINDOWS vista Function characteristics USB InterfaceUSB2.0 high speed Capacity128MB, 256MB, 512MB, 1GB ...