Juniper Modular Port Concentrator - 2 x Expansion Slot 2 x Expansion Slots MX-MPC2-3D-Q

Modular Port Concentrators (MPCs) provide packet forwarding services that deliver up to 120 Gbps of full-duplex traffic. The MPCs are inserted into a slot in a router. Modular Interface Cards (MICs) provide the physical interfaces and install into the MPCs. You can install up to two MICs of different media types in the same MPC as long as the MPC supports those MICs.

A specialized fixed configuration MPC provides higher port density over MICs and combines packet forwarding and Ethernet interfaces onto a single line card. The fixed configuration MPC is inserted into a slot in a router and contains no slots for MICs.