How to install vmware vSphere 5.5 essentials (there are 11 modules on download page with no guide)

I have an ESXi 5.5 Host with internal storage that I want to  install VMware vSphere 5.5 essentials.

I have a 2nd ESXi 5.5 Host with 384GB RAM and access to a big SAN and that is where all the VMs will reside for now.  Next year I will add another new host for more VMs.

On my ESXi 5.5 Host with internal storage I have installed Server2008R2 and then I have installed VMware vCenter Server Appliance and now I am looking for the rest of what I need to do to get everything ready
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
You do not need to download ANYTHING!

You just need to Add the License Keys to vCenter Server.

The software is the same, is just license keys, which change features.

In the vSphere Client > Select Host > Configuration > License Features

and see this EE Article here

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