Specification: The USB cable tester is a reliable tool used to test the connection status and integrity of USB cables. It features a simple and straightforward design consisting of 24 LED indicators, associated resistors, and a standard CR2032 coin battery. Users simply need to plug the two ends of the USB cable to be tested into the corresponding connectors, and the LED indicators will show the integrity of the internal wires of the cable. This allows users to intuitively understand the status of the cable, whether there are broken connections due to missing wires or physical damage. (Note: The cable's power-bearing capacity cannot be tested.) PCB Size: 3.35 inches x 2.76 inches (85mm x 70mm) Power: Power 1 - CR2032 button battery, Power 2 - Vin (external power supply) Vin range: 3V < Vin < 12V. Ensure that the power supply is within this range to prevent device abnormalities or damage. Measurement types: TypeB 3.0, TypeB 2.0, TypeC 3.0, MicroB 3.0, MicroB 2.0, MiniB 2.0, and Lightning. TypeC 3.0 is compatible with TypeC 3.1 and 3.2 as they share the same pins. Instructions for use: Insert the CR2032 button battery or connect the Vin power supply. Switch the power switch correctly based on the connected power supply. Connect the USB cable to be tested, and the LED indicators will light up. (Please note that short-circuited pins, diodes, active electronics, or other faults/things inside the cable may provide false results.) Package includes: 1*USB detection board 1 set ofAcrylic case 【Reliable USB cable tester】: The product can be used to test different types of USB cables, including TypeB 3.0, TypeB 2.0, TypeC 3.0 (TypeC 3.1/TypeC 3.2), MicroB 3.0, MicroB 2.0, MiniB 2.0, and Lightning. 【Convenient and practical】: The product features a portable design, compact size, and is easy to carry and use.It's comes with an acrylic case to protect the usb cable tester from damage. 【Multiple power supply options】: Supports two power supply modes: CR2032 button battery or external power supply (Vin) within the range of 3-12V. Vin provides reverse connection protection. 【LED indicator lights】: Test results are displayed through 24 LED indicators, with each pin corresponding to an LED light. 【Multi-functional and practical】: Supports multiple types of interfaces, allowing quick detection of data cable abnormalities and detection of internal short circuits that may interfere with normal operation.