Unlike table-top computers, most laptops have only one port for EITHER an
external keyboard OR a mouse.  When the laptop notices something plugged
into the external port, it sends an interrogation to find out what kind of
device is there so it can interpret the incoming signal correctly.  I think
what's happening in your case is that you're having to wait until the
keyboard gives the correct reply before plugging in the :CueCat which is
probably incapable of replying.

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