I use some 2200C 3300 & 4300, but the wired bahavoiur noticed on 2200C :
Hostname:
Model: ex2200-c-12p-2g
Junos: 15.1R5.5
JUNOS EX Software Suite [15.1R5.5]
JUNOS FIPS mode utilities [15.1R5.5]
JUNOS Online Documentation [15.1R5.5]
JUNOS EX 2200 Software Suite [15.1R5.5]
JUNOS Web Management Platform Package [15.1R5.5]
JUNOS Web Management Application package [15.1A3]
This is on all 3300 and 2200, 4300 has different OS.