Juniper EX4300 Series Hardware Manual page 47

Table 8: EX4300 Switch Models, Shipped Components, and Supported Junos OS Release
Model Number Built-In Ports Number
of
PoE-
Enabled
Ports
Fan Power
Modules Supply
and Airflow Shipped
by Default
(Continued)
Supported First
Uplink Modules Junos O
S
Release
Starting in
Junos OS
Release
19.3R1, you
can install two
100-Gigabit
Ethernet
QSFP28
transceivers in
the uplink
module. In
Junos OS
Release 18.4R1
through
Junos OS
Release
19.2R1, the
uplink module
supported only
one 100-
Gigabit
Ethernet
transceiver. If
you configure
both the ports
on the uplink
module to
operate at 100-
Gbps speed,
the four QSFP+
ports on the
switch are
disabled.
The switch
supports the 4-
port 1-Gigabit
Ethernet SFP/
37