The Fluke MicroScanner2 can be used to verify cables and connections. We show how to test a ethernet cable and we show what an incorrectly wired cable would show on the tester. You can find the tester here FlukeMicroscanner - https://amzn.to/3x4LqOM You can find the upgraded version here Fluke Networks LIQ-100 LinkIQ Cable + Network Tester - https://amzn.to/3NH4JUt Stay connected! Youtube Channel - https://www.youtube.com/channel/UCBkQn_WucQ8YpzRFY3EYqMQ Instagram - https://www.instagram.com/htmworkshop/ Twitter - https://twitter.com/HTMWorkshop Facebook - https://www.facebook.com/HTM-Workshop-101784815596164