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MikroTik CRS304-4XG-IN 4-Port 10 Gigabit Ethernet Switch with Fanless Design for Enterprise

Brand MikroTik

Model Number CRS304-4XG

EpicRise Warranty 1 Year

Product Highlights

• 4x 10GbE RJ-45 ports with multi-speed support (10M/100M/1G/2.5G/5G/10G) deliver plug-and-play high-bandwidth connectivity

• Fanless passive cooling design ensures silent operation ideal for noise-sensitive environments like offices and labs

• Quad redundant power inputs (2x DC jack, PoE-in, 2-pin terminal) with automatic failover prevent network downtime

• Layer 3 hardware offload, VLAN, bandwidth limiting, and traffic mirroring support advanced enterprise network configurations

• Compact DIN-rail mountable form factor with wide -40°C to +70°C operating range fits industrial and field deployments

Overview
Specifications
FAQ
User Guides
Reviews

The MikroTik CRS304-4XG-IN simplifies 10 Gigabit Ethernet deployment for enterprise networks. Unlike typical 10GbE products requiring separate transceivers, this switch delivers four ready-to-use 10 Gigabit Ethernet ports in a compact, fanless design. IT teams gain immediate high-speed connectivity for bandwidth-intensive applications without complex setup or active cooling infrastructure.

Powered by a dual-core ARM CPU and Marvell Prestera switching chip, the CRS304 handles advanced networking functions including port-to-port forwarding, broadcast storm control, MAC filtering, VLAN configuration, traffic mirroring, and Layer 3 hardware offload. Four redundant power input options (dual DC jacks, PoE-in, 2-pin terminal) with automatic voltage selection ensure continuous operation. The rugged one-piece enclosure serves as both structural housing and passive heatsink, enabling reliable operation from -40°C to +70°C.

Best For

The CRS304-4XG-IN addresses high-bandwidth networking requirements across diverse enterprise environments where silent operation and flexible deployment are critical.

- Data Center Aggregation: Connect servers and storage systems with 10GbE uplinks while maintaining fanless operation in temperature-controlled facilities

- Office Network Backbone: Deploy silent 10 Gigabit Ethernet switching in open office environments without acoustic disruption to work areas

- IP Surveillance Systems: Aggregate high-resolution camera feeds with multi-speed port auto-negotiation supporting mixed 1G/2.5G/10G endpoints

- Industrial Automation: Install in manufacturing and control environments leveraging wide temperature range and DIN-rail mounting for equipment racks

- Field Network Operations: Transport in mobile deployment kits utilizing compact form factor and multiple DC power input options

Key Features

- Four RJ-45 ports with multi-speed auto-negotiation (10M/100M/1G/2.5G/5G/10G) eliminate transceiver requirements and simplify mixed-speed network integration

- One-piece aluminum enclosure with passive cooling design operates silently across full temperature range without mechanical fan components

- Marvell 98DX2528 switching chip with dual-core 1200 MHz ARM CPU delivers wire-speed forwarding and Layer 3 hardware offload capabilities

- Quad redundant power inputs (12-57V DC jack x2, 802.3af/at PoE-in, 2-pin terminal) with automatic highest-voltage selection prevent single-point power failures

- Dual-boot firmware supports RouterOS v7 for advanced configuration or SwOS for hardware-accelerated Layer 2 switching without software mode performance degradation

- DIN-rail mounting brackets with repositionable placement and standard screw mounting points enable flexible rack, wall, or equipment frame installation

- Additional Gigabit Ethernet management port provides out-of-band access for configuration and monitoring independent of data traffic

- Extended -40°C to +70°C operating temperature range with IP20 ingress protection supports non-climate-controlled industrial environments

Quick Specs

Model	CRS304-4XG-IN
Architecture	ARM 64-bit dual-core 1200 MHz
Switching Chip	Marvell 98DX2528
Memory	512 MB RAM / 32 MB Flash
10GbE Ports	4x RJ-45 (10M/100M/1G/2.5G/5G/10G multi-speed)
Management Port	1x Gigabit Ethernet (10/100/1000)
Switching Layer	Layer 2+ with Layer 3 hardware offload
Power Input	4x redundant: 2x DC jack (12-57V), 1x PoE-in (802.3af/at, 36-57V), 1x 2-pin terminal (12-57V)
Max Power Consumption	21W with accessories / 15W standalone
Cooling	Passive (fanless)
Operating Temperature	-40°C to +70°C
Dimensions	176 x 128 x 35 mm
Weight	0.82 kg
Mounting	DIN-rail bracket (included), screw mounting points
Operating System	RouterOS v7.15.3+ / SwOS 2.18+ (dual-boot)
License Level	RouterOS Level 5
MTBF	~200,000 hours @ 25°C

What's Included

- CRS304-4XG-IN switch unit

- 48V 0.95A power adapter

- DIN-rail mounting bracket

Product Details
Power Source	DC-powered

What network environments is the MikroTik CRS304-4XG-IN best suited for?

The CRS304-4XG-IN suits office networks, data centers, and industrial facilities requiring 10 Gigabit Ethernet switching without fan noise. Its passive cooling design works in noise-sensitive environments like open offices and libraries. The wide -40°C to +70°C operating range and DIN-rail mounting support manufacturing floors and outdoor equipment enclosures.

How does the CRS304-4XG-IN compare to other MikroTik 10GbE switches?

The CRS304-4XG-IN delivers four 10GbE RJ-45 ports with built-in multi-speed support, eliminating the SFP+ transceiver requirements of models like the CRS305-1G-4S+IN. Its fanless design and compact 176mm width enable desktop or equipment rack installation where larger rackmount switches cannot fit. The quad power input options provide redundancy not available in single-input models.

Is the CRS304-4XG-IN worth its price point for enterprise deployments?

At $199 MSRP, the CRS304-4XG-IN provides four ready-to-use 10GbE ports without requiring separate transceivers that typically cost $50-150 each. The fanless design eliminates ongoing fan replacement costs and power consumption. Layer 3 hardware offload and RouterOS Level 5 licensing deliver advanced routing capabilities included in the base price.

What systems and equipment is the CRS304-4XG-IN compatible with?

The CRS304-4XG-IN works with any device supporting standard Ethernet protocols over RJ-45 connections. Multi-speed auto-negotiation supports 10M through 10G endpoints including servers, NAS systems, IP cameras, and other switches. RouterOS v7 supports BGP, OSPF, VLAN, and standard TCP/IP protocols for integration with Cisco, HPE, and other vendor equipment.

What power supply options does the CRS304-4XG-IN support?

The switch accepts four simultaneous power inputs: two DC jacks (12-57V), one 802.3af/at PoE input (36-57V), and one 2-pin terminal block (12-57V). The switch automatically selects the input with highest voltage for operation. Maximum power consumption is 21W with all accessories or 15W for the switch alone.

Can the CRS304-4XG-IN operate in extreme temperature environments?

The switch operates from -40°C to +70°C with passive cooling only. The one-piece aluminum enclosure functions as a heatsink without requiring active cooling. This temperature range covers most outdoor equipment cabinets, unheated warehouses, and industrial production environments without additional climate control.

What mounting options are available for the CRS304-4XG-IN?

The included DIN-rail bracket attaches to either side or back panel for equipment rack mounting. Standard screw mounting points on the rear panel enable wall or shelf installation. The compact 176 x 128 x 35 mm dimensions and 0.82 kg weight support desktop placement or mobile deployment kit integration.

What is the difference between RouterOS and SwOS operating modes?

RouterOS v7 provides advanced Layer 3 routing, firewall rules, and scripting capabilities with Winbox GUI management. SwOS operates all features in pure hardware mode for maximum throughput without software switching overhead. The dual-boot configuration allows switching between operating systems based on network requirements without firmware reinstallation.