My customer asked me to suggest expansion module for EX-4600, Which module do we need to purchase ?
I refer above link for expension module and have some query found on CAUTION in document.
Copper SFP transceivers (1000BASE-T) are restricted to the top four ports or the bottom four ports; fiber SFP transceivers (1000BASE-X) can be used in any of the eight ports. Attempting to stack copper SFP transceivers causes internal damage to the module.
> Attempting to stack copper SFP transceivers causes internal damage to the module.
## It is just a normal warning and if it damage module then why juniper document put this part in support EX 4600
> Copper SFP transceivers (1000BASE-T) are restricted to the top four ports or the bottom four ports
## Is it strictly restrict to use top four port or bottom four port. or we can use any for port like three any top four port and one any bottom port.
## If we use four port with copper SFP transceivers (1000BASE-T) Can we use remaining four port with fiber SFP transceivers (1000BASE-X)