How to tell whether there is a problem with your hardware or if your module is broken?
Each port has 2 leds: a yellow one for running streams and a green one for linking up. Before using the software, when you connect the cassis the two leds will flash for one or two seconds.
To check if the module is broken simply reset the chassis. If none of the module's led flash it means it is broken and you should do an "RMA". If the leds are working you should contact support to find out what is the problem.