Cisco Modular Port Adapter - For Data Networking, Optical Network - 16 x Expansion Slot, 2 x 400GBase-X Expansion Slot - Optical Fiber50 Gigabit Ethernet, 400 Gigabit Ethernet - 400GBase-X - 18 x Expansion Slots - SFP56, QSFP56-DD - Plug-in Module - 1: