Juniper EX4500-40F-VC1-FB

Juniper 40-port GbE/10GbE SFP/SFP+ front-to-back airflow, 128 Gbps Virtual Chassis
Interconnect module, hardware support for Data Center Bridging, and support for eight PFC (802.1Qbb) queues.

EX4500-40F-VC1-FB, CMMDP10DRA, 750-036562

Featuring up to 48 wire-speed 10-Gigabit Ethernet (10GbE) ports in a two rack unit (2U) platform, the Juniper Networks® EX4500 Ethernet Switch delivers Layer 2 and Layer 3 connectivity to networked devices such as servers and other switches. The EX4500 base switch provides 40 fixed 10GbE pluggable ports that can also support GbE connectors for added flexibility. Two optional high-speed uplink modules offer four additional 10GbE small form-factor pluggable transceiver (SFP+) ports each for connecting to upstream devices