I cannot connect my Keymander to Cronus Zen.

I followed the instructions to connect the Keymander and Zen. I plugged in the Zen first then plugged in the Keymander using the cord that normally goes into console to the Zen controller port. I made sure the cables were sync and charge. I even plugged in a power cable for the Keymander. It works when I plug in my controller to the Keymander. But as soon as I plug in my keyboard or mouse it stops working. My Keymander will just turn off and make a high pitch noise. My Keymander works fine normally but not when I plug it into the Cronus. Controller works but keyboard and mouse makes my Keymander turn off.