MikroTik CRS804 DDQ: Compact 400G Switching for Modern Networks

When your network needs to move beyond 100G, the MikroTik CRS804 DDQ offers a practical way to step into 400G without oversized hardware.

Designed for modern cores, AI and GPU clusters, and high-speed aggregation, the CRS804 DDQ features 4× 400G QSFP56-DD ports alongside 2× 1/10G Ethernet ports for management or lower-speed uplinks, all powered by RouterOS v7.

High-density bandwidth, right-sized

With four native 400G ports in a single rack unit, the CRS804 DDQ is well suited for:

• AI and GPU clusters that depend on low-latency, high-bandwidth east–west traffic
• High-performance storage fabrics supporting all-flash or large dataset workflows
• Core and aggregation roles where rack space and power efficiency matter

Under the hood, it combines high-performance Marvell switching silicon with a quad-core ARM CPU and 4 GB of RAM, providing wire-speed switching with the control and visibility RouterOS users expect.

Built to scale with your network

One of the CRS804 DDQ’s biggest advantages is flexibility. Each QSFP56-DD port supports breakout configurations, allowing you to deploy native 400G today or split ports into 200G, 100G, or lower-speed links as needed. That makes it easier to integrate into existing infrastructure now, while keeping your upgrade path open for the future.

Designed for reliability

• Dual AC power inputswith hot-swap power supplies
• Efficient cooling and a compact, rack-ready design
• Support for continuous operation in demanding data center conditions

 Download Full Details (PDF)

CRS804 Accessories

The MikroTik CRS804 DDQ delivers serious bandwidth without unnecessary complexity. It’s a strong fit for organizations that need 400G capability in a practical, scalable switch—whether you’re building a new high-speed fabric or upgrading your core one step at a time.