MikroTik CRS804 DDQ 400G 1U Switch 4×QSFP56-DD
The MikroTik CRS804 DDQ (CRS804-4DDQ-hRM) is a compact 1U 400G switch built for AI clusters, storage fabrics, and high-speed aggregation. It features four 400G QSFP56-DD ports with flexible breakout down to 1G, dual 1G/10G Ethernet, a Marvell 98DX7335 switch chip, quad-core 2 GHz ARM CPU, 4 GB DDR4 RAM, dual hot-swap redundant power supplies, and two hot-swap cooling fans — all at 123W max power consumption. Runs RouterOS v7 with License Level 6.
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The MikroTik CRS804 DDQ (CRS804-4DDQ-hRM) is a compact, efficient, and future-proof 400G switch designed for environments where bandwidth density, reliability, and cost of ownership matter. Powered by the Marvell 98DX7335 switch chip and a quad-core 2.0 GHz ARM CPU with 4 GB DDR4 RAM, it delivers wire-speed switching across all ports while running RouterOS v7 for advanced traffic management and a familiar management environment.
Four 400G QSFP56-DD ports each carry eight independent data lanes, enabling flexible breakout to 2×200G, 4×100G, 4×40G, 4×25G, 4×10G, or lower speeds — allowing the CRS804 DDQ to interconnect virtually any SFP or QSFP device in your existing network and scale to higher speeds over time without replacing the switch.
Key features:
- 4× 400G QSFP56-DD ports — breakout to 1G/2.5G/5G/10G/25G/50G/100G/200G
- 2× 1G/10G Ethernet ports (10M/100M/1G/10G supported)
- Marvell 98DX7335 switch chip — full wire-speed on all ports
- Quad-core 2.0 GHz ARM AL52400 CPU, 4 GB DDR4 RAM, 512 MB NAND
- Dual hot-swap redundant AC power supplies (100–240V, 50–60 Hz) — included
- 2× hot-swap cooling fans for sustained thermal stability
- Max power consumption 123W (92W without attachments)
- Serial console port (RJ45) for out-of-band management
- CPU, PCB, and voltage monitoring
- RouterOS v7, License Level 6 — free updates for life (minimum 5 years)
- Rackmountable 1U — RMK-2x10/19 kit, rackmount brackets, and K-99 fastening set included
- -10°C to +60°C, MTBF ~200,000 hours at 25°C
- Certified CE, EAC, RoHS | IP20
In the box: 2× IEC cords, rackmount bracket, rackmount rear support ears, rackmount bracket (long), RMK-2x10/19, K-99 fastening set.
Optional accessories: G1394-0350WNA (350W AC hot-swap PSU replacement), G1382-0350WNA (-48V DC hot-swap PSU), MT-HotSwapFan-V2 (replacement fan module), DQ+BC0003-DS+ (200G QSFP56 breakout DAC 3m).
Ideal for: AI and GPU clusters, all-flash storage fabrics, compact 400G spine/backbone fabrics, edge compute installations, enterprise pods, and small data centres where traditional 400G equipment is too costly, too loud, or too large.
- Product code
- CRS804-4DDQ-hRM
- CPU architecture
- ARM 64bit
- CPU
- Quad-Core AL52400 2000 MHz
- Switch chip model
- 98DX7335
- Operating System
- RouterOS v7, License level 6
- Size of RAM
- 4 GB
- Storage size
- 512 MB, NAND
- Max Power consumption
- 123 W
- Number of AC inputs
- 2
- AC input range
- 100-240 V
- Operating Temperature
- -10°C to +60°C
- RAM type
- DDR4
- Power adapter nominal voltage
- 12 V
- Power adapter nominal current
- 27.5 A
- Number of 1G/2.5G/5G/10G Ethernet ports
- 2
- Number of 400G QSFP56-DD ports
- 4
- Max power consumption (without attachments)
- 92 W
