Can the network cable be connected without a crystal head?
It's possible. If the network cable is not long enough, there are two ways to connect. One is to make a crystal head and then connect it with a straight-through head. One is to peel off the skin of the wire core of the network cable, wrap the wire core tightly with another network cable according to the principle of one-to-one correspondence of chromatography, and then wrap it with insulating tape. If possible, solder can be used before winding the tape.