I use now 2 VINT hubs connected to a PC.
I see no deattaching anymore.

I have a project where we use 6x Phidgets DAQ1301_0 to read out 84 buttons. I connected a 12V 4.2A power supply to detect the inputs. All 6x Phidgets DAQ1301_0 are connected to 1 VINT hub. The VINT hub is connected with a powered usb hub. When some of the buttons is pressed the Phidgets board deatta...