The MikroTik CRS804-4DDQ-hRM is a compact 1U form factor 400G switch designed for modern network infrastructures requiring high bandwidth. It offers four 400G QSFP56-DD ports and two 1G/10G Ethernet ports, making it an ideal solution for AI clusters, storage networks, and high-speed aggregation scenarios. Powered by the Marvell 98DX7335 switch chip, it delivers wire-speed performance on all ports, while RouterOS v7 provides advanced traffic control and ease of management. Technically, it features a quad-core ARM processor (AL52400) running at 2.0 GHz and 4 GB of DDR4 RAM, ensuring high packet processing capacity and low latency to handle demanding network loads. Equipped with dual redundant, hot-swappable power supplies and two hot-swappable fans, the device offers high reliability and uninterrupted operation. With a power consumption of only 123W at full load, energy efficiency is also a priority. In terms of use cases, the CRS804-4DDQ-hRM is an excellent building block for AI and GPU clusters, providing low-latency, predictable performance. Each 400G QSFP-DD port consists of eight independent data lanes, offering flexible breakout options; you can start with lower speeds like 40G or 100G in your existing network and seamlessly upgrade to 200G or 400G in the future. Its compact size and low noise level make it ideal as a powerful backbone or aggregation switch for small data centers with limited rack space, enterprise pods, and edge computing environments. Technical Specifications: - Product Code: CRS804-4DDQ-hRM - CPU: Quad-Core AL52400 2000 MHz - RAM: 4 GB DDR4 - Storage: 512 MB NAND - Number of 400G QSFP56-DD Ports: 4 - Number of 1G/10G Ethernet Ports: 2 - Switch Chipset: Marvell 98DX7335 - Operating System: RouterOS v7 (License Level 6) - Maximum Power Consumption: 123 W - Power Supply: 2x Hot-Swap AC (100-240V) - Cooling: 2x Hot-Swap Fans - Operating Temperature: -10°C to +60°C