Canon MX450 series Online Manual page 182

Windows: Operation can only be guaranteed on a computer with Windows 8, Windows 7,
Windows Vista or Windows XP pre-installed.
Windows: Internet Explorer 7, 8 or 9 is required to install Easy-WebPrint EX.
Easy-WebPrint EX for Internet Explorer 9 can be downloaded from the Canon web site.
Windows: Some functions may not be available with Windows Media Center.
Windows: .NET Framework 4 or 4.5 must be installed to use the Windows software.
Windows: XPS Essentials Pack is required to print on Windows XP.
Mac OS: Hard Disk must be formatted as Mac OS Extended (Journaled) or Mac OS Extended.
Mac OS: For Mac OS, an internet connection is required during software installation.
Windows: The TWAIN driver (ScanGear) is based on the TWAIN 1.9 Specification and requires
the Data Source Manager bundled with the operating system.
Specifications are subject to change without notice.