---
manufacturer: Ciena
model: '3931'
slug: ciena-3931
part_number: 170-3931-900
u_height: 11
weight: 13
weight_unit: kg
is_full_depth: false
airflow: passive
front_image: true
console-ports:
  - name: CONSOLE
    type: rj-45
module-bays:
  - name: PSU A
    position: A
  - name: PSU B
    position: B
interfaces:
  - name: '1'
    type: 10gbase-x-sfpp
  - name: '2'
    type: 10gbase-x-sfpp
  - name: '3'
    type: 1000base-x-sfp
  - name: '4'
    type: 1000base-x-sfp
  - name: '5'
    type: 1000base-x-sfp
  - name: '6'
    type: 1000base-x-sfp
  - name: '7'
    type: 1000base-t
  - name: '8'
    type: 1000base-t
  - name: '9'
    type: 1000base-t
  - name: '10'
    type: 1000base-t
  - name: MGMT
    type: 1000base-t
    mgmt_only: true