... Support dry, wet, or rough fingerprints Compatible with all U.are.U applications and development tools to support Biokey Development Tools Support ... Driver support Windows98, Me, NT4.0, 2000, XP, Vista, Windows Sever 2000,2003,2008 The environment parameters: Supply voltage: 5.0V ... compatible with USB1.0, 1.1,2.0 Digital Personal U.R.U 4500 Finger Print Reader