Your PE’s came with a XE receiver??? Interesting… I didn’t think they were compatible.
My PE’s came with a ‘PE receiver’ (03-00099-21) that has the same CC2430 MCU as the PE clickers, as well as a CP2102 USB-to-serial IC.
I might not have posted to this thread, but it was fairly easy to re-program the CP2102 to have a more standard configuration and device manager name (using a software tool), and I have successfully re-programmed the CC2430 with my own firmware (right now it just blinks the LEDs and sends data on the UART) using nothing but a spare Arduino (https://github.com/serisman/Smart-Response-PE/tree/master/examples/hello-world-receiver).
I have some extra ‘PE’ receivers available if anyone wants one for a reasonable price.