Other companies still have no such ground, so it was saved. However, this connector had multiple sizes for Lan and USB, and even if I looked at the manufacturer's catalog, I had a hard time not knowing which one was for Lan. This time somehow I found something suitable for the size of the lead-in part and cable, but it is saved if these information are appended.
There is not much waterproof cable ground through which LAN cable can pass, but this goes through LAN jack and USB jack as well. To increase waterproofness, it is advisable to tighten the cable with rubber of the ground after it is hardened with epoxy bond through an ABS pipe.