I have 2 Drobo S equipped with 5 2 TB WD green drives. Dashboard is Version 1.7.3, the firmware on both Drobo S is 2.0.1. The one Drobo S seems to have the lights dimmed on the frontpanel, the other lights full power. How can I adjust the light brightness on the Drobo? In the manual there should be an option to dim the light but in my version of dashboard there is no such option. Any ideas?