MikroTik CRS305-1G-4S+IN 10G SFP+ Switch

The MikroTik CRS305-1G-4S+IN is a compact and powerful 10 Gigabit SFP+ switch designed for high-speed fiber and Ethernet networking environments.

The switch features four SFP+ ports supporting up to 10Gbps per port, along with one Gigabit Ethernet port for management access or regular network traffic.

With its compact metal enclosure, fanless passive cooling and flexible operating system options, the MikroTik CRS305 provides a practical solution for businesses, ISPs, data centers, network laboratories and high-performance home networks.

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4 × 10G SFP+ Ports

The key feature of the MikroTik CRS305-1G-4S+IN is its four SFP+ ports, each capable of supporting connections up to 10Gbps.

These ports can be used for high-speed fiber and network connectivity.

The four SFP+ interfaces make the CRS305 suitable for applications such as:

• 10G fiber uplinks
• Data center networking
• ISP backbone connections
• Server-to-switch connections
• NAS connectivity
• High-speed network aggregation
• Network labs
• Enterprise networking
• Long-distance fiber links using compatible transceivers

With four SFP+ interfaces in a compact enclosure, the MikroTik 10G SFP+ Switch provides a high-speed networking platform without requiring a large rack-mounted chassis.

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1 Gigabit Ethernet Management Port

Alongside the four SFP+ ports, the CRS305-1G-4S+IN includes one 10/100/1000 Gigabit Ethernet port.

This port can be used for:

• Management access
• Regular Ethernet traffic
• Network configuration
• RouterOS management
• SwOS management

This gives network administrators a dedicated copper Ethernet interface while the SFP+ ports handle high-speed network connections.

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Dual-Boot RouterOS and SwOS

One of the major advantages of the MikroTik CRS305 is its dual-boot operating system support.

Users can choose between:

RouterOS

RouterOS provides advanced networking functionality and Layer 3 capabilities.

It can be used for configurations involving:

• Routing
• Firewall
• VLAN
• Layer 3 networking
• Network management
• Traffic control
• Advanced routing features

SwOS

SwOS is MikroTik’s switch-focused operating system designed for straightforward Layer 2 switch management.

It provides switch-specific functions through a simplified interface.

The ability to select between RouterOS and SwOS allows the CRS305 to adapt to different network requirements.

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High-Speed 10G Network Switching

The MikroTik CRS305-1G-4S+IN is designed around the Marvell 98DX3236 switch chip.

MikroTik’s published switching tests show non-blocking Layer 2 performance of up to approximately 40.47 Gbps throughput and approximately 80.93 Gbps capacity, depending on the test methodology and packet configuration.

The published results represent controlled laboratory testing. Actual network performance depends on packet size, configuration, transceivers, cables and network traffic.

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Compact Fanless Metal Design

The CRS305-1G-4S+IN comes in a compact metallic enclosure measuring:

141 × 115 × 28 mm

Its passive cooling design eliminates the need for a cooling fan.

This makes the switch suitable for environments where:

• Low noise is important
• Space is limited
• Fanless networking equipment is preferred
• The switch is installed on a desktop
• A compact 10G network switch is required

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Redundant Power Inputs

The MikroTik CRS305 provides multiple power options, including two DC jack inputs.

This allows power redundancy configurations where required.

The device supports:

• DC power input
• 802.3af/at PoE input

The supported input voltage range is 12–57V.

This flexibility can be useful for professional network installations and ISP environments.

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PoE Support

The CRS305-1G-4S+IN supports 802.3af/at PoE input.

PoE can provide an alternative method of powering the switch where compatible PoE infrastructure is available.

This can simplify deployment in certain network environments by reducing the need for a separate local power connection.

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512MB RAM and ARM Architecture

The CRS305 features an ARM 32-bit architecture with an 800 MHz dual-core CPU and 512MB RAM.

Hardware specifications include:

• CPU: 98DX3236
• CPU cores: 2
• CPU frequency: 800 MHz
• RAM: 512MB
• Storage: 16MB Flash
• Architecture: ARM 32-bit

This hardware platform supports both RouterOS and SwOS.

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MikroTik CRS305 for Fiber Networks

The MikroTik CRS305 10G SFP+ Switch is particularly useful for fiber-optic networking.

It can be used with compatible SFP+ modules and fiber cables for high-speed network connections.

Potential applications include:

• Fiber ISP networks
• FTTH network infrastructure
• Data center links
• Enterprise fiber networks
• Server rooms
• Network aggregation
• 10G uplinks
• High-speed NAS connections
• Wireless ISP infrastructure
• Network testing laboratories

For fiber network deployments, the four SFP+ ports provide multiple high-speed interfaces in a compact device.

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MikroTik CRS305 for Data Centers

The compact 10G SFP+ switch can also be used in server and data-center environments.

Four 10G SFP+ interfaces can connect servers, storage devices, switches and other high-speed networking equipment.

Its fanless design can also be useful in environments where reduced acoustic noise is desirable.

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MikroTik CRS305 for ISPs

Internet Service Providers and network operators can use the CRS305-1G-4S+IN for high-speed uplinks and aggregation.

The four SFP+ ports can be used to connect:

• Core switches
• Aggregation switches
• Fiber uplinks
• Servers
• Routers
• Network distribution equipment

RouterOS support additionally provides access to advanced networking features where required.

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MikroTik CRS305 Specifications

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Key Features

4 × 10G SFP+ Ports

Connect multiple high-speed fiber or 10G network devices.

1 × Gigabit Ethernet

Use the copper Ethernet port for management or regular network traffic.

Dual-Boot Operating System

Choose between RouterOS and SwOS depending on your networking requirements.

10G Network Performance

Designed for high-speed switching and network aggregation.

512MB RAM

Provides the memory required for the device’s operating system and networking functions.

PoE Input

Supports 802.3af/at PoE input for flexible deployment.

Fanless Operation

Passive cooling provides silent operation without a cooling fan.

Compact Metal Enclosure

The compact 141 × 115 × 28 mm enclosure is suitable for desktop and space-constrained installations.

Redundant Power Options

Multiple DC inputs provide additional power flexibility.

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Why Choose MikroTik CRS305-1G-4S+IN?

The MikroTik CRS305-1G-4S+IN combines four 10G SFP+ ports, a Gigabit management port, dual operating system support and a compact fanless design.

It can be deployed in a variety of networking environments, including fiber networks, ISPs, data centers, enterprise networks, server rooms and high-speed home labs.

With support for both RouterOS and SwOS, network administrators can select an operating environment based on their required switching and routing features.

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Buy MikroTik CRS305-1G-4S+IN in Pakistan

Looking to buy MikroTik CRS305-1G-4S+IN in Pakistan?

Universal Fiber Solutions provides networking and fiber-optic equipment for ISPs, businesses, data centers and professional network installations.

The MikroTik CRS305-1G-4S+IN 10G SFP+ Switch is suitable for customers looking for a compact switch with 4 × 10G SFP+ ports, 1 Gigabit Ethernet port, RouterOS/SwOS support and PoE input.

For MikroTik CRS305 price in Pakistan, availability and network deployment requirements, contact Universal Fiber Solutions.