The TCP configuration for computers with Windows Vista, Windows 7 or Mac OS 10.5 operating systems or over support the power provided by Videotron Ultimate Speed Internet access. Previous-generation computers will require adjustments to fully achieve this speed. If upgrading to these operating systems is not possible and/or desired, the Windows XP or Mac OS 10.4 IP stack can be adjusted with utilities available at the Videotron
Customer Center.
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