Auto Fill drop down list with Search Suggestions

A rather simple way of having this feature enable is:
1- Add a combo filter list box from developer options.
2- Click "view source code"
3- Add the following VBA code:

Private Sub ComboBox1_GotFocus()

ComboBox1.ListFillRange = "=DropDownList"

Me.ComboBox1.DropDown

End Sub

4- Done !