C3850-NM-4-1G Cisco Catalyst 3850 4 x 1GE Network Module

StarTech.com 10 Gigabit Fiber SFP Transceiver Module - Cisco Meraki MA-SFP-10GB-

CISCO NM-4T 4-Port Serial Network Module

Cisco EVM-HD-8FXS/DID High-Density 8-Port FXS/DID Voice Network Module

CISCO PVDM2-32 32-Channel Packet Voice/Fax DSP Module

CISCO C3850-NM-BLANK Cisco Catalyst 3850 Network Module Blank

NIM-4FXS - Cisco ISR 4000 Series Modules Cisco 4-Port

CISCO NM-1FE-TX 1-Port Fast Ethernet Network Module (TX Only)