Any of mcafee retail card products you purchased like McAfee LiveSafe, Total protection, McAfee Antivirus Plus, McAfee Internet Security, etc, then you need to download, install & activate on your PC or Mac.Its easy to understand that your McAfee Activate code is Redeemed successfully or not, First you need to go on .mcafee.com/activate then enter your product key and all other required details.