EX-UM-2QSFP-MR on EX4300-48MP

https://www.juniper.net/documentation/en_US/release-independent/junos/topics/topic-map/ex4300-system-overview.html

https://junipernetworks-my.sharepoint.com/:p:/r/personal/jkriker_juniper_net/_layouts/15/Doc.aspx?sourcedoc=%7B677368eb-7179-4100-ac93-39ddb8ea0831%7D&action=edit&wdPreviousSession=4fc63587-ba5b-d7f8-c9b1-f875b4041685

BCM82391 or BCM82391 : Dual 100G            , EX4300 PFE: BCM56565

https://www.broadcom.com/products/ethernet-connectivity/optical-phy/bcm82391

https://apps.juniper.net/hct/model/?component=EX-UM-2QSFP-MR