Feature: 1: Quickly detect abnormal data lines 2: Small and convenient 3: Fast detection, easy to carry 4: Multi-level protection ensures the stability and safety of the test 5: Simple to use Description: USB data board switch--Type-C port DT3 USB data cable tester fast detection and lightweight Quickly detect abnormal data lines. When the light is on, it means the power is normal, and if it is off, it means the power is abnormal. Multi-level protection ensures the stability and safety of the test. Small and convenient, fast detection, easy to carry. After connecting power from the power port, plug the test leads into the appropriate input ports. 4 lights on means that the power supply is normal, 4 lights all on means the power supply is abnormal (two-head Type-C connection is normal, 5 lights are all on) Material: PCB+metal colour: black Package Contents: 1 x Data line detection board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.