Please check compatibility with your OS

Compatible with Sierra 10.12

Not compatible with High Sierra 10.13, Mojave 10.14, Catalina or Big Sur

This listing includes: 

CS5.5 Production Premium upgrade plus serial number from upgraded version.

You do not need to have any other versions for this to Install and Activate the Full Retail Version. 

This item includes everything you will need.

Includes:

Adobe Premiere Pro CS5

Adobe After Effects CS5

Adobe Photoshop CS5 Extended

Adobe Flash Catalyst CS5

Adobe Illustrator CS5

Adobe Encore CS5.5

Adobe Flash Professional CS5

Adobe Bridge CS5

Comes with the necessary serial numbers