I’m not an expert on the interworkings of the Rpi4 USB posts, but the max speed of ZW communication is 100KB, so either 60 MB (USB2) or 625 MB (USB3) will be overkill. Also there is an issue with some of the older Aeotec 5 sticks with Rpi4. Unless you are sure you have the model with the hardware fix, put the stick in an unpowered (or powered USB2 hub), not directly in an Rpi4 USB port.
