C3850-NM-8-10G -- Cisco - Expansion module - 10 Gigabit SFP+ / SFP (mini-GBIC) x 8 - for Catalyst 3850-12X48 $8,047.31 $10,409.38
C3850-NM-2-10G -- Cisco - Expansion module - 10 GigE - 2 ports + 4 x shared SFP - for Catalyst 3850-12, 3850 $3,584.25 $4,612.06
C3850-NM-4-1G -- Cisco - Expansion module - GigE - 4 ports - for Catalyst 3850-12, 3850-12X48, 3850-24, 385 $730.31 $925.00
C9200-NM-4X -- Cisco Catalyst 9200 Series Network Module - Expansion module - 10 Gigabit SFP+ x 4 - for C $1,371.07 $2,688.38
C9300-NM-4G -- Cisco Catalyst 9300 Series Network Module - Expansion module - Gigabit SFP x 4 - for Catal $503.97 $638.76
