FNIRSI FNB58 USB Port Tester - Black

The FNIRSI FNB58 USB Port Tester is a professional diagnostic tool designed for measuring and analyzing USB charging performance. Featuring a high-resolution 2-inch display, Bluetooth connectivity, and support for major fast-charging protocols, it provides detailed real-time monitoring of voltage, current, power, and charging behavior. The tester helps verify charger quality, evaluate cable performance, detect charging issues, and monitor charging efficiency. With support for PD 3.1, PPS, QC, AFC, SCP, and many other standards, it is suitable for technicians, electronics enthusiasts, and anyone who wants accurate insight into USB power delivery systems.