Yes - the notes you have made regarding Belkin connection are very familiar. We have have established a similar routine for getting the connection started.
But the BlackBox problem looks different. When we connect PicoScope hardware to a USB port we get the Windows message from icon on bottom right hand side of the screen, saying that PicoScope 3000 has been connected.
But when we start the PicoScope6 software, we get the Windows Hardware Wizard, and while pressing Next we reach what seems to be a hang-up.
However, we can try again with the added insight from your Belkin notes, and let you know what happens.
If it seems useful can we send our BlackBox hardware to PicoTech in UK for testing, or are you swamped with this kind of work?