Go to http://mcafee(.)com/activate and Sign Up (McAfee products you purchased will be on the McAfee page)
Click and install to download Setup. (The download process will start immediately)
Now go to the settings file (folder Downloads) and double click the settings file to start the installation.
Press on the speed to start the installation. (You should read these Terms and Conditions and click on Confirm.)
MacAfee security software must be installed on your device. So, Click on Finish to complete the process.

How to redeem / activate McAfee Retail Card?

Read the instructions on the MacAfee promo card before redeeming / activating the McAfee safe.
Go to the link. translation http://www.mcafee(.)com/activate.
Fill in your 25 entry code for McAfee to activate. (Look for it on a shopping card)
Click the 'Submit' button and follow the instructions that follow.
McAfee CDs or DVDs are good in cases where the internet connection is slow and downloading your product can be a problem. They are also great if you want to install a quick fix for some reason - since they have all the required files in one place. But, DVD does not give you the benefit of updating its programs and content only.

Steps to install McAfee products

Go to McAfee Antivirus software and open it. (It will launch a new window on your screen that will ask you to log in to MacAfee to activate the product key of your package.)
Enter the 25-item product number sent to you by the McAfee team when purchasing the product and click activate. http://www.mcafee(.)com/activate dell (A pop-up alert will tell you about the activation of your McAfee products)
You can restart your system to complete the process.

Hope This Helps You Out.

Peter