of the Cisco ASR 9000 Series Aggregation Services Routers (ASR 9000 Series). These modular line cards have two open bays (bay 0 and bay 1) for plugging in ASR 9000 Series Modular Port Adapters (MPA), which gives network operators the flexibility to choose the ideal port density, speed, and optic based on their network requirements. With ASR 9000 Series modular line cards and the MPA portfolio, Cisco continues to focus on investment protection, along with consistent feature support, broad interface availability, and the latest technology. The latest additions to the MPA portfolio include the Cisco ASR 9000 Series 20-Port 10GE Modular Port Adapter, the 2-Port 100GE Modular Port Adapter, the 1-port 100G Modular Port Adapter and the MACSec enabled 32 port 1GE Modular Port Adapter.