Connecting to AWS MySQL with IAM user.

I am trying to connect to a MySQL database on AWS and I am trying to do so using an IAM user.

I have tried connecting with a root user and it was successfull. However, when I tried entering a my IAM user credential, I have the following error. 

So my question is:

1) Is it possible to connect to a MySQL db on AWS using an IAM user? If so, what credential do i use to login? 

2) Do I need a special access/previlege on this IAM user to connect from power BI?