This device has worked well for a while. Then it showed a 3 pin error on known good 8 pin cables. This device did not work right out of the box. 3 known working 8-wire network cables were tested. The tester showed #5 poorly on all three. It's a shame that this simple and inexpensive tester is so unreliable, but I think you get what you pay for. Might try again in the future.
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