CS5.5

[Александр15C2]

I own the Adobe CS5 version.5 I have a serial number and a key, I need a distribution kit.

[Test Screen Name]

You should have kept it. No replacements are available.

[AxelMatt]

Adobe has removed older version from the public web sites. 

You have to contact Adobe directly for a download link. Have your serial number and details of original purchase available. Make it clear that you doesn't need support for an older product but need a download link. Click the link below and scroll down the page to Individual “Sign in to contact us” It should be possible to start an on-line chat with an Adobe agent. 

https://helpx.adobe.com/support.html