arduino - Where do I find a cheap hardware USB sniffer - Reverse Engineering Stack Exchange
USB Hub Bug Hunting & Lessons Learned
Summit Soft Consulting - Articles - USB Bus / Protocol Analyzer Review / Comparison
USB Monitor Pro - USB traffic sniffer and analyzer
sysmocom site - OpenVizsla v3.x USB Protocol Analyzer PCBA
Identifying and Debugging Common USB Issues - Total Phase
Usb480-ii,usb2.0 Interface Usb Protocol Analyzer - Tool Parts - AliExpress
Summit Soft Consulting - Articles - USB Bus / Protocol Analyzer Review / Comparison
Teledyne LeCroy - Protocol Analyzer - Mercury T2
Beagle USB 12 Protocol Analyzer - Total Phase
200472426 - Total Phase
Ellisys - USB Explorer 200 - USB 2.0 Analyzer
Buy NooElec Great Scott Gadgets GreatFET One Bundle - Hi-Speed USB Peripheral, Logic Analyzer, Debugger and Development Board. Open Hardware. Includes GreatFET One, Wiggler, Cable & 120 Prototyping Wires Online in Pakistan.
LE-650H2 Overview
Ellisys - USB Explorer 280 - USB 3.0 SuperSpeed Analyzer