The number of Connections is dependent on the number of colors you have defined in the uc4config.xml. The more colors you add, the more connections you can have.
-<colors>
<color b="0" g="0" r="255"/>
<color b="0" g="255" r="0"/>
<color b="255" g="152" r="42"/>
<color b="0" g="255" r="255"/>
<color b="14" g="178" r="241"/>
<color b="255" g="0" r="255"/>
<color b="255" g="255" r="255"/>
<color b="149" g="140" r="170"/>
</colors>
8 colors are defined by default. You may add one of your own by copy/pasting en existing entry and adding different numbers.