Some devices will not function properly with other devices. The physical order on the SCSI chain sometimes causes problems with some devices. This SCSI PC case should change any of these conditions. If the devices functions properly in a standard setup using individual cases and cables, then it should work in the PC SCSI case. The shielding of the case and the ribbon cable is a concern that many people have.
External devices have metal or conductive walls and have real short ribbon cables.
The PC case should provide the necessary shielding required for the outside world. The major question is the shielding requirement from device to device and from cable to device. The PC case system may cause SCSI re-tries and other problems with the SCSI bus if not properly implemented. The use of a SCSI test program can be used to conduct timing tests to see if the PC case system is not performing properly. The speaker mounting might be a good place to mount a fan.