The Informatica Powercenter is a 4 post series, see all posts clicking here.
You can download INFORMATICA POWERCENTER at:
Search for: “Oracle Informatica PowerCenter and PowerConnect Adapters”
Select your software > click on top right “continue”.
On the new page, select your Operational System > continue.
On the new page > accept the terms.
On the new page select only the version you need, in our case, 10.4.1 > Click download.
After that just follow the normal next next finish procedures using the downloaded software.