MIKROTIK Cloud Router Switch CRS804 DDQ

CRS804 DDQ - compact 400G switch for future networks

CRS804 DDQ - it is modern 1U 400 Gigabit Network Switch, designed for AI (artificial intelligence) clusters, high-speed data storage, and network aggregation. The device has 4 × 400G QSFP-DD ports, 2 × 1/10G Ethernet ports and works with RouterOS v7.

With its compact size, low power consumption, and robust design, the CRS804 DDQ enables you to achieve extremely high network throughput without complex or expensive solutions.

High speed, small size

CRS804 DDQ ensures full-speed (wire-speed) data transfer and low latency even under heavy loads. This allows for smooth data transfer between servers, GPU nodes, and storage - without bottlenecks.

Inside works:

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  Marvell 98DX7335 switching chip

  
  


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  4-core 2.0 GHz ARM processor

  
  


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  4 GB DDR4 RAM

  
  


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  RouterOS v7 - powerful and widely used network management system

  
  

Future-proof and compatible with existing equipment

Everyone 400G QSFP-DD port consists of 8 data lines, so it can be breakout to:

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  2 × 200G

  
  


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  4×100G

  
  


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  or lower speed connection, e.g. 40G

  
  

This allows the CRS804 DDQ to be used already today, even if your network does not yet have 400G equipment, and gradually upgrade your network in the future - without replacing the switch.

Reliable and economical solution

CRS804 DDQ is designed for long-term use:

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  Hot-swappable power supplies (included)

  
  


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  Efficient and quiet cooling system

  
  


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  Low energy consumption - only 123 W at full load with optical modules

  
  

This means lower electricity and maintenance costs in the long run.

Where CRS804 DDQ fits best

AI and GPU clusters

A great choice for AI labs, research, and small to medium-sized AI projects where low latency and stable data flow are important.

High-speed storage networks

Ideal for all-flash storage, media processing, and scientific computing where fast data movement is required.

Compact data centers and edge solutions

Perfect for space-constrained environments where traditional 400G equipment would be too large, too noisy, or too expensive.

Flexible installation

Included in the kit RMK-2x10/19 the holder allows two CRS804 DDQ switches installed in one 1U height in the standard 19 inches in the server cabinet.

CRS804 DDQ - an easy way to move to 400G

With CRS804 DDQ 400 gigabit speeds become available It's a smart choice for those who want to grow, maintain compatibility with existing equipment, and be prepared for future network needs.

Product code: CRS804-4DDQ-hRM
Architecture: ARM 64bit
CPU: AL52400
CPU core count: 4
CPU nominal frequency: 2000 MHz
CPU Thread count: 4
Switch chip model: 98DX7335
RouterOS license: 6
Operating System: RouterOS v7
RAM size: 4 GB
Storage size: 512 MB
Storage type: NAND
MTBF: Approximately 200'000 hours at 25C
Tested ambient temperature: -10°C to 60°C

Powering

Number of AC inputs: 2
AC input range: 100-240
Frequency (Hz): 50-60
Max power consumption: 123 W
Max power consumption without attachments: 92 W
Cooling type: 2 fans

Ethernet

Number of 1G/2.5G/5G/10G Ethernet ports: 2 (supported: 10M/100M/1G/10G)
Number of 400G QSFP56-DD ports: 4

Peripherals

Serial console port: RJ45

Other

CPU temperature monitor: Yes
PCB temperature monitor: Yes
Voltage Monitor: Yes

Certifications Approvals

Certification: CE, EAC, ROHS
IPs: 20