... for free download from our website www.mustups.com. Suitable for installation on PCs running Windows Vista, 2003, XP, 2000, Me, 98; Linux ... )Noise LevelLess than 45dBMANAGEMENTOptional USB/RS-232 PortSupports Windows® 98/2000/2003/XP/Vista/2008, Windows® 7, Linux, and MAC 500va to 6000va ...