---
manufacturer: MikroTik
model: CRS520-4XS-16XQ
slug: mikrotik-crs520-4xs-16xq
part_number: CRS520-4XS-16XQ
is_full_depth: false
airflow: front-to-rear
u_height: 1
comments: |
  [Product Page](https://mikrotik.com/product/crs520_4xs_16xq_rm).

  Careful, there is only qsfp28-1-[1..16] interfaces for 100Gb,
  don't forget to add the other if you use breakout cables.
front_image: false
rear_image: false
is_powered: true
interfaces:
  - name: ether1
    type: 1000base-t
    mgmt_only: true
  - name: qsfp28-1-1
    type: 100gbase-x-qsfp28
  - name: qsfp28-2-1
    type: 100gbase-x-qsfp28
  - name: qsfp28-3-1
    type: 100gbase-x-qsfp28
  - name: qsfp28-4-1
    type: 100gbase-x-qsfp28
  - name: qsfp28-5-1
    type: 100gbase-x-qsfp28
  - name: qsfp28-6-1
    type: 100gbase-x-qsfp28
  - name: qsfp28-7-1
    type: 100gbase-x-qsfp28
  - name: qsfp28-8-1
    type: 100gbase-x-qsfp28
  - name: qsfp28-9-1
    type: 100gbase-x-qsfp28
  - name: qsfp28-10-1
    type: 100gbase-x-qsfp28
  - name: qsfp28-11-1
    type: 100gbase-x-qsfp28
  - name: qsfp28-12-1
    type: 100gbase-x-qsfp28
  - name: qsfp28-13-1
    type: 100gbase-x-qsfp28
  - name: qsfp28-14-1
    type: 100gbase-x-qsfp28
  - name: qsfp28-15-1
    type: 100gbase-x-qsfp28
  - name: qsfp28-16-1
    type: 100gbase-x-qsfp28
  - name: sfp28-1
    type: 25gbase-x-sfp28
  - name: sfp28-2
    type: 25gbase-x-sfp28
  - name: sfp28-3
    type: 25gbase-x-sfp28
  - name: sfp28-4
    type: 25gbase-x-sfp28
  - name: sfp-sfpplus1
    type: 10gbase-x-sfpp
  - name: sfp-sfpplus2
    type: 10gbase-x-sfpp
console-ports:
  - name: serial0
    type: rj-45
module-bays:
  - name: power1
    position: power1
    description: Power module
  - name: power2
    position: power2
    description: Power module
  - name: fan1
    position: '1'
    description: Fan tray
  - name: fan2
    position: '2'
    description: Fan tray
  - name: fan3
    position: '3'
    description: Fan tray
  - name: fan4
    position: '4'
    description: Fan tray