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MikroTik CRS804 DDQ is a high-performance switch equipped with 4 × QSFP56-DD slots with up to 400 Gb/s throughput and 2 × 10G Ethernet ports (1 / 2.5 / 5 / 10G). It comes with the RouterOS operating system preinstalled with a Level 6 license, providing advanced Layer 3 management features. The manufacturer has equipped it with a powerful quad-core AL52400 processor clocked at 2000 MHz and 4 GB of RAM. It stands out in terms of capabilities and performance compared to competing switches. The offered product is ideal for a wide range of applications requiring maximum speed. It can be successfully used in a server room to connect critical devices and is an excellent solution for data centers and AI clusters. The package includes two AC hot-swap power supplies designed for redundant operation—if one fails, the other takes over. The ventilation modules are also hot-swap, allowing replacement without interrupting the operation of the device. The package also includes an RMK-2x10/19 rack mount, enabling you to install two switches in a single 19" rack location. The CRS804 DDQ can also be mounted individually in a 19" rack.

4x QSFP56-DD (400G), 2x 10G Ethernet
The offered product is a switch equipped with 4 × QSFP56-DD slots providing speeds of up to 400 Gb/s and 2 × 10G Ethernet ports. The device ensures very high switching throughput, and each interface also offers backward compatibility, making it much easier to upgrade an existing network. The QSFP56-DD slots can operate in 40G, 50G, 100G, 200G, or 400G modes, and the Ethernet ports support full speed negotiation—1 / 2.5 / 5 / 10 Gb/s.
Layer 3 management, AL52400 processor (4 cores 2 GHz), 4 GB RAM
The CRS804-4DDQ-hRM comes with the RouterOS operating system preinstalled with a Level 6 license. It provides all the advanced configuration capabilities found in other MikroTik solutions. At the same time, the device is equipped with a powerful processor featuring 4 cores clocked at 2 GHz and 4 GB of RAM. This ensures outstanding performance compared to other CRS series solutions, which is essential given the high throughput it is designed to handle.


Hot-swap power and ventilation modules
The manufacturer has equipped the switch with hot-swap power and ventilation modules—you can replace them during operation without turning off the entire device. The power modules operate redundantly; if one fails, the other takes over. This makes the CRS804-4DDQ-hRM highly reliable and suitable for use in mission-critical locations.
Compact enclosure, 19" Rack mountable
The switch features a compact external size, and the package includes a bracket for mounting in a 19" rack. Additionally, you can use the RMK-2x10/19 (also included) to mount two switches side by side in a rack. The device should be installed using 4 rails.


Application
The offered product is ideal wherever you need a high-performance switch that provides maximum transmission throughput. It is primarily designed for AI clusters and data centers, allowing you to connect multiple servers with 400 Gb/s bandwidth. It is also appreciated by users with smaller networks, as the CRS804-4DDQ-hRM is much more affordable than large 400G solutions and allows for upgrading connections in locations where large, power-hungry switches are not necessary.
Specifications
| MikroTik CRS804-4DDQ-hRM | |
| CPU | Quad-Core AL52400 2000 MHz |
| CPU architecture | ARM 64bit |
| Size of RAM | 4 GB |
| RAM type | DDR4 |
| Storage | 512 MB, NAND |
| Number of 1G/2.5G/5G/10G Ethernet ports | 2 |
| Number of 400G QSFP56-DD ports | 4 |
| Switch chip model | 98DX7335 |
| Operating System | RouterOS v7, License level 6 |
| Operating temparature | -10°C to 60°C |
| Powering | |
|---|---|
| Number of AC inputs | 2 |
| AC input range | 100 - 240 V AC |
| Power adapter nominal voltage | 12 V |
| Power adapter nominal current | 27.5 A |
| Max power consumption (without attachments) | 92 W |
| Max power consumption | 123 W |





