Seen this critter and understand Mac Pro is protected from total damage but it will cook the USB port yes / no .... just not the entire Mac ??? ?
My other question is if used with said lesser designed non Mac with this USB killer toast the entire non Mac laptop ? Data and everything ? Essentially any modern Mac is protected. Some good quality PCs as well. Depends on the design of the USB port whether the port will survive or not. On a Mac it will, IIRC. As for data and everything, it depends on how the data is stored.