The crystal head of the network cable is broken. Local; the connection is broken.

The function of the shrapnel on the crystal head is to better connect the crystal head and the network cable connector together.

Generally speaking, a broken shrapnel will not cause the crystal head to loosen. It is recommended to try another network cable. Personally, I estimate that the disconnection problem may be caused by a damaged network card.

The onboard network card on my computer often dropped offline. Later, it was checked that the network card was damaged, so I found a network card and installed it. I also used the original network cable without shrapnel, and it was OK!

I don’t know if that’s where you are!

Suggestion: Try changing a few more lines until you are sure where there is a problem, then change it!