C3850-NM-4-1G= Cisco Catalyst 3850 4 x 1GE Network Module
Network Module Ethernet 4 Port Gigabit For Catalyst 3850 Series
4 x Gigabit Ethernet with Small Form-Factor Pluggable (SFP) receptacles

Info Produk : https://www.cisco.com/c/en_intl/products/collateral/switches/catalyst-3850-series-switches/datasheet_c78-720918.html

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