It was very thoughtful of manufacturer to make several ways to mount the device and it is up to user to make a choice.
If inside acrylic case, bigNG can be simply placed somewhere inside the case, for example, at the bottom of the case, or even outside the case:
There are some nibs on the bottom side of the board which interfere with bottom part of the acrylic case when assembling the case, however, package contetnt includes nuts that create an additional spacing:
Controller can be connected to external USB ports using USB connector type B, but additional cable is required.
If you have enough space inside you PC case to mount the controller in PCI slot then you have to add a PCI bracket to the controller:
To install the controller inside the 3.5″ bay it is need to add special adaptors to appropriate holes on the board:
After putting controller together there are a lot of cables that need to be connected. There were no problems when connecting power plugs, flow sensors, and fans — they all have polarity marks unlike internal USB cable or I2C and LED buses. So better look through both manuals the motherboard’s and the controller’s.
Connection polarity marking is located on the board itself and technical documentation does not have this kind of information:
Polarity mistake can lead to controller or/and even motherboard malfunction. I recommend turning off PC power completely when connecting the device via internal USB cable — some motherboards provide standby voltage to USB ports even if PC is shut-down. After making sure everything is connected right it is finally the time to start the whole system.