Diamond Smart One 56Kbps USB V.92 Controller-based Data/Fax Modem Universal Serial Bus (USB) delivers the fastest and most convenient hook up Quick connect reduces the start-up time required to establish a connection Cut your connect time by up to 40% or more New V.44 compression delivers up to 40% more throughput for HTML documents and pages Microsoft Windows 98, ME, 2000, XP, MAC OS 9.1 and above (Internet Call waiting drivers and application for Windows 2000 and XP only)