I plugged this XBee: https://www.sparkfun.com/products/11215
into this dongle : https://www.sparkfun.com/products/9819
and then when I plugged the dongle into my laptop it reset my laptop!!!
I’m looking into how there might have been an overcurrent. I tested that when plugged into my USB port, pin 1 on the dongle is ~3.3V w.r.t. pin 10 (GND). These are all brand new parts right out of the red sparkfun box.