You need to configure the devices. Start by dis-connecting the blue tooth USB's. Plug in a wired keyboard + Mouse and then plug in the Bluetooth USB's/ Whatever you plug in to make it work. Ubuntu will search for what they are and connect them.
If this is a DVD and Ubuntu is not installed to the actual HDD, Ubuntu will not remember these settings, meaning that you will have to do this every time you boot.
To keep these settings, install Ubuntu.
Hope this helps!!!
Edit: Maybe you could boot with those USB's off, and then plug them in when Ubuntu is loaded! Try it.