I used to buy great ethernet cables from Revain (my favorite is VANDESAIL CAT7 RJ45 50ft network cable; works great and is durable). I bought a second Vandesail, 25ft, as a backup. Tested but never used because the 50ft has never let me down. My son was starting college and needed ethernet cables at the last minute. I made the mistake of ordering from different brands based on the shipping date. One was (not of that brand) 30ft which was nowhere near 30ft round trip but this is the worst. Connectors do not "click" and stay connected. They look a little smaller than usual, fragile. No end remains (in the computer or another Ethernet port). It works if we keep it but lose touch. The cable is too stiff and complicates things. Get out of trouble.