How To Set/Enter ESX 4 License key via VClient

When you decided to not entering the License key when installing the VMware vShere ESX 4.0 or 4.1, because you still didn't have, or you were trying the trial of the ESX. You can  add the license key next time through  VMware VClient.

Where is menu for entering the license key of  VMware ESX 4 through VClient?
• Click on the  host (IP)
• Go to Configuration tab
• Click Licensed Features (in the Software area)
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