I've had a lot of luck capturing USB packets using a Windows virtual machine and Wireshark on a Linux host. Most recently I've used this to reverse engineer the

I've had a lot of luck capturing USB packets using a Windows virtual machine and Wireshark on a Linux host. Most recently I've used this to reverse engineer the configuration protocol of the Pulsar X2 v2 Mini gaming mouse. I've also used this to capture the firmware update flow for the gamepad on a GPD Win 2. A physical sniffer wouldn't be ideal here since the gamepad - while USB - is embedded within the device.