MikroTik CRS304-4XG-IN Ethernet Switch

As high-speed networking becomes increasingly essential for both enterprise and prosumer environments, compact yet powerful 10G switches have carved out a significant space. One standout in this category is the MikroTik CRS304-4XG-IN Ethernet Switch. If you’re looking for a small-form, fanless, ultra-fast device to handle your backbone or server-to-server traffic, this MikroTik switch deserves a close look.

Complete Overview of the MikroTik CRS304-4XG-IN Ethernet Switch

The MikroTik CRS304-4XG-IN Ethernet Switch is a 4-port 10G SFP+ managed switch in a compact and robust metal casing. Despite its small size, it delivers impressive performance and flexibility. This model is particularly favored by network professionals, data center admins, and power users seeking cost-effective 10G switching solutions without compromising reliability.

Powered by a dual-core 32-bit 800 MHz CPU and equipped with 512MB of RAM, the CRS304-4XG-IN supports MikroTik’s RouterOS with Layer 3 features, as well as SwOS for simplified Layer 2 switching. This dual-boot capability allows users to choose the operating system that best fits their use case.

From its build quality to performance, the CRS304 is designed to handle demanding networking tasks — whether it’s aggregating multiple 10G links or acting as a distribution switch in high-throughput environments.

Use Cases for MikroTik CRS304-4XG-IN Ethernet Switch

This switch is ideal for:

• Small-to-medium data centers needing 10G core or aggregation
• Office networks transitioning to 10G infrastructure
• Studio setups for video editing and high-speed NAS access
• Lab environments and homelabs requiring low-noise, rackless high-speed switching

The MikroTik CRS304-4XG-IN Ethernet Switch can be deployed as a distribution layer switch connecting multiple high-speed devices such as servers, workstations, and storage units. It’s also suitable for edge deployments requiring SFP+ uplinks.

Port Configuration and Connectivity

The CRS304-4XG-IN features:

• 4x SFP+ ports supporting 10G speeds — fully compatible with MikroTik and third-party transceivers.
• 1x RJ45 Console Port for initial configuration and management.
• Dual Power Supply Inputs (DC + PoE-in) — for redundancy and flexibility.

All four SFP+ ports are directly connected to the switch chip, delivering full non-blocking throughput and line-rate switching with no bottlenecks.

Build Quality, Design, and Reliability

The chassis is made from high-grade metal, offering both durability and excellent thermal management. Its fanless design makes it completely silent, ideal for environments where noise is a concern — such as offices, studios, or quiet server rooms.

Thanks to passive cooling and solid-state components, the MikroTik CRS304-4XG-IN Ethernet Switch can run 24/7 under full load without overheating or failing. MikroTik’s reputation for stable performance and reliable hardware ensures peace of mind for long-term operation.

Useful Scenario: Aggregating Multiple NAS Units

With four SFP+ ports at your disposal, the CRS304 is perfect for connecting several 10G-enabled NAS devices. Whether you’re building a centralized file server environment or a fast media production workflow, this switch enables ultra-fast file transfers and low-latency collaboration.

Real-World Use: Extending Uplink Capabilities

Need to extend your network’s 10G backbone to another floor or building? Use fiber modules in the CRS304’s SFP+ ports and connect long-distance links with ease — ideal for campuses or distributed business environments.

Comparison with Similar MikroTik Switches

Here’s how the CRS304-4XG-IN compares with other MikroTik 10G-capable switches:

If you’re looking for an affordable, ultra-compact switch with solid 10G support, the MikroTik CRS304-4XG-IN Ethernet Switch is the clear winner.

Technical Specifications

Frequently Asked Questions (FAQ)

1. Does the CRS304-4XG-IN support Layer 3 routing?
   Yes, under RouterOS it offers Layer 3 features.
2. Can I use it with non-MikroTik SFP+ modules?
   Absolutely, most standard SFP+ modules are supported.
3. Does it require active cooling?
   No, it’s fanless and passively cooled.
4. Is it suitable for rackmount?
   No, it’s a compact desktop form factor. For rackmount needs, consider CRS312.
5. Can it operate as a core switch in small networks?
   Yes, it’s ideal for core or aggregation in small 10G setups.
6. What is the max throughput?
   The switch supports non-blocking line-rate switching on all ports.
7. Can I use both DC and PoE power sources simultaneously?
   Yes, for redundancy.
8. What OS should I use, SwOS or RouterOS?
   SwOS is simpler for Layer 2 tasks; RouterOS offers advanced Layer 3 features.
9. Does it come with a power adapter?
   Yes, the package includes a DC adapter.
10. Is it suitable for fiber uplinks?
    Definitely, the SFP+ ports can be equipped with fiber modules for long-distance links.

Final Verdict: Is MikroTik CRS304-4XG-IN Worth It?

If you’re in the market for a reliable, compact, and silent 10G switch that won’t break the bank, the MikroTik CRS304-4XG-IN Ethernet Switch is a smart investment. It provides enterprise-level switching at a fraction of the cost, without sacrificing build quality or flexibility.

Whether you’re building a professional NAS setup, small data center core, or a high-speed office LAN, this unit checks all the boxes.