Installing an Uplink Module in an EX4300 Switch
Before you begin installing an uplink module in the switch:
Ensure that you have taken the necessary precautions to prevent ESD damage (see Prevention of Electrostatic Discharge Damage).
Ensure that you have the following parts and tools available:
Electrostatic discharge (ESD) grounding strap (If a grounding strap is not available, follow the alternative grounding method described in Step 1 of the following procedure.)
Phillips (+) screwdriver, number 2
You can install an uplink module in the front panel of an EX4300 switch. The uplink module in EX4300 switches is a hot-removable and hot-insertable unit (FRU): You can remove and replace it without powering off the switch.
If you have set an uplink module port as a Virtual Chassis port (VCP), removing the uplink module breaks the setting. You must reset the port as a VCP after you replace the module. See Setting an Uplink Port on an EX Series or QFX Series Switch as a Virtual Chassis Port.
To install an uplink module in the switch (see Figure 1, Figure 2, and Figure 3):
![Installing a 4-Port 1-Gigabit Ethernet/10-Gigabit Ethernet SFP+ Uplink Module in a 24-Port or 48-Port EX4300 Switch Except EX4300-48MP and EX4300-48MP-S Switches](../../images/g022104.png)
The procedure is the same for EX4300-48MP and EX4300-48MP-S switches.
![Installing a 2-Port 40-Gigabit Ethernet QSFP+ Uplink Module in a 32-Port EX4300 Switch](../../images/g022140.png)
![Installing an 8-Port 10-Gigabit Ethernet SFP+ Uplink Module in a 32-Port EX4300 Switch](../../images/g022139.png)
If you have a Juniper J-Care service contract, register any addition, change, or upgrade of hardware components at https://www.juniper.net/customers/support/tools/updateinstallbase/ . Failure to do so can result in significant delays if you need replacement parts. This note does not apply if you replace existing components with the same type of component.