1) USB interface ;
  2) Support DOS to start ;
  3) No driver type (except Windows 98 SE) ;
  4) No external power needed .
2.Full Description: 
  1)USB Interface ;
  2)3. 5 inch 720KB/1. 4MB FDD ;
  3)Super slim and lightweight ;
  4)Available USB Bus supply current: 500mA or less ;
  5)Data capacity: 720KB/1. 44MB(Formatted) ;
  6)USB Data Transfer Rate: Full speed /12Mbps; 
  7)Data Transfer Rate: 250 Kbits(720KB)/500 Kbits (1. 44MB) ;
  8)Number of Cylinders: 80 ;
  9)Rotation speed: 300 rpm. 360 rpm recording method: MFM ;
  10)Media: High Densit(2HD) or Normal Density(2DD) ;
  11)Average Latency Time: 100 MSEC(1. 44MB mode) 83. 3 MSEC (720KB Model) .
3.Operating Temperature :
  1)Between 4 degrees Celsius and 51 degrees Celsius ;
  2)Between 39 degrees Fahrenheit and 125 degrees Fahrenheit .
4.Relative humidity :
  Operating: Between 20% and 80% .
5.Hardware Requirements :
  1)Computer with USB Port ;
  2)USB Universal Host Control.