MikroTik CRS305-1G-4S+IN 10G Network Switch | 4 SFP+ High-Performance Switch India

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

MikroTik CRS305-1G-4S+IN is a compact 10 Gigabit Ethernet switch designed for high-speed fiber and SFP+ network connectivity. It features 4× SFP+ ports supporting up to 10Gbps per port along with 1× Gigabit Ethernet port for management access or regular Ethernet traffic.

The CRS305-1G-4S+IN combines high-speed SFP+ connectivity, a compact metal enclosure, passive cooling and flexible operating system options. It supports both RouterOS and SwOS, allowing the switch to be configured either as a feature-rich RouterOS networking platform or as a simplified SwOS-based switching device.

4× 10G SFP+ Ports for High-Speed Networking

The main feature of the MikroTik CRS305-1G-4S+IN is its four SFP+ cages. Each SFP+ port supports up to 10Gbps, making the switch suitable for high-speed uplinks, server connectivity, storage networking and fiber-based network links.

The SFP+ interfaces can be used with compatible MikroTik or third-party SFP/SFP+ modules, DAC cables and fiber connectivity solutions. The manufacturer also specifies support for 1.25Gbit modules, providing additional flexibility for different network requirements.

1× Gigabit Ethernet Management Port

Alongside the four SFP+ ports, the CRS305-1G-4S+IN includes one 10/100/1000 Gigabit Ethernet port. This copper Ethernet interface can be used for management access or regular traffic forwarding.

This combination makes the CRS305 useful when a network requires several 10G fiber or DAC connections while still retaining a conventional RJ45 Ethernet interface for management and configuration.

RouterOS and SwOS Dual Boot

One of the important features of the MikroTik CRS305-1G-4S+IN is its dual-boot operating system support. The device can run either RouterOS or SwOS.

SwOS provides a simplified switching environment focused on Layer 2 switch management. RouterOS provides a broader feature set and enables additional networking and Layer 3 functionality supported by the hardware and software configuration.

The operating system can be selected through the available RouterOS, SwOS or RouterBOOT configuration options.

Compact 10G Switch for Desktop and Network Deployments

The CRS305-1G-4S+IN uses a compact metallic enclosure measuring approximately 141 × 115 × 28 mm. Its small footprint makes it suitable for network cabinets, server rooms, desktops and compact infrastructure installations where multiple 10G SFP+ connections are required.

The device uses passive cooling with no cooling fan, allowing it to operate silently. This can be useful in office environments, network rooms and other installations where fan noise is undesirable.

Redundant Power Options

The MikroTik CRS305-1G-4S+IN provides multiple power input options. It supports DC input as well as 802.3af/at PoE-in.

The manufacturer specifies a DC input voltage range of 12–57V and supports PoE-in within the specified input range. The device also provides multiple DC input connections for power redundancy.

10G Networking for Servers and Storage

With four 10G SFP+ interfaces, the CRS305-1G-4S+IN can be used to connect servers, storage systems, network switches and other compatible 10GbE devices.

Typical deployments can include:

• 10G server uplinks
• NAS and storage connectivity
• High-speed switch-to-switch links
• Fiber-based network backbone connections
• Data center network expansion
• 10G workstation connectivity
• Network lab and virtualization environments
• Small-scale high-speed aggregation

MikroTik CRS305 Switching Performance

MikroTik publishes switching and Ethernet test results for the CRS305-1G-4S+IN. In the manufacturer’s non-blocking Layer 2 switching test, the switch is specified with measured throughput and capacity values depending on packet size and test configuration.

For example, the published 1518-byte Layer 2 test shows approximately 40.47Gbps throughput and approximately 80.93Gbps switching capacity. These are manufacturer test results obtained using specified test equipment and configurations; actual network performance can vary depending on traffic patterns, packet sizes, transceivers, configuration and connected devices.

98DX3236 Switch Chip and ARM CPU

The CRS305-1G-4S+IN is built around the 98DX3236 switch chip and uses a dual-core ARM processor running at 800MHz. The platform includes 512MB RAM and 16MB Flash storage.

The hardware architecture provides the processing resources required for the supported RouterOS and SwOS functionality while the switch chip handles the high-speed Ethernet switching functions.

PoE-In Support

The MikroTik CRS305-1G-4S+IN supports 802.3af/at PoE-in. This allows the device to receive power through a compatible Ethernet connection when the network installation supports the required PoE standard and input conditions.

PoE-in can simplify installations where running a separate power cable to the switch is inconvenient. The CRS305 also supports DC power input, providing flexibility for different deployment environments.

Passive Cooling and Silent Operation

The CRS305-1G-4S+IN uses a passive cooling design rather than an active fan-based cooling system. This enables silent operation while keeping the compact enclosure suitable for indoor network installations.

The manufacturer specifies a tested ambient operating temperature range of -40°C to +70°C.

Layer 2 and Layer 3 Networking

When configured with SwOS, the CRS305 can be used primarily as a dedicated managed switching platform. When running RouterOS, the device can provide access to additional networking and Layer 3 capabilities supported by RouterOS.

This dual-operating-system approach gives network administrators flexibility when deciding whether they need a straightforward managed switch environment or a broader RouterOS-based configuration.

MikroTik CRS305-1G-4S+IN Use Cases

• 10G fiber network switching
• 10G SFP+ server connectivity
• NAS and storage networks
• Data center network links
• 10G switch uplinks
• Small enterprise networks
• High-speed office networks
• Virtualization and server environments
• Network laboratories
• ISP and infrastructure deployments
• Fiber-based backbone connectivity

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

The MikroTik CRS305-1G-4S+IN is designed for network environments where multiple 10G SFP+ connections are required without moving to a larger rack-mounted switch. Its four SFP+ ports provide high-speed connectivity while the Gigabit Ethernet port provides conventional Ethernet management or traffic access.

The combination of 4× 10G SFP+, 1× Gigabit Ethernet, RouterOS/SwOS dual boot, PoE-in, passive cooling and multiple power inputs makes the CRS305 a flexible option for compact high-speed networking deployments.

AI-Readable Product Facts

Frequently Asked Questions

What is the exact model number of MikroTik CRS305?

The exact product code is MikroTik CRS305-1G-4S+IN.

How many 10G ports does MikroTik CRS305-1G-4S+IN have?

The CRS305-1G-4S+IN has 4× SFP+ ports, with each port supporting up to 10Gbps.

Does MikroTik CRS305 have a Gigabit Ethernet port?

Yes. The switch includes 1× 10/100/1000 Gigabit Ethernet port for management access or regular traffic forwarding.

Does MikroTik CRS305 support RouterOS?

Yes. The CRS305-1G-4S+IN supports both RouterOS and SwOS through its dual-boot capability.

Does MikroTik CRS305 support PoE?

Yes. The CRS305 supports 802.3af/at PoE-in. PoE is an input power option rather than PoE output for powering other devices.

Is MikroTik CRS305 a 10G switch?

Yes. It is a compact 10G switch with four SFP+ interfaces supporting up to 10Gbps per port.

Does CRS305 have active cooling?

No. The CRS305-1G-4S+IN uses passive cooling and does not require an active cooling fan.

Can MikroTik CRS305 be used for NAS or storage networking?

Yes. Its 10G SFP+ interfaces can be used to connect compatible NAS, storage servers and other 10GbE devices, subject to compatible SFP+ modules, DAC cables and network configuration.

What is the CPU of MikroTik CRS305?

The CRS305-1G-4S+IN uses a dual-core 98DX3236 processor running at 800MHz.

Is MikroTik CRS305 suitable for a 10G fiber network?

Yes. Its four SFP+ cages are designed for high-speed 10GbE connectivity using compatible fiber modules, DAC cables or supported SFP+ solutions.

Related MikroTik Products & Categories

Explore more MikroTik Networking Products in India for switches, routers, wireless systems and enterprise networking products.

For MikroTik switching solutions, explore the MikroTik Router category and related networking hardware available for different deployment requirements.

For higher-performance routing platforms, browse the MikroTik CCR Router range.

You can also explore MikroTik RouterBOARD products and Wireless Network Devices for complete network infrastructure requirements.

For enterprise networking projects, bulk requirements and current pricing, use the Get a Quote page.

Product Identification

For quotations, purchase orders, inventory and technical documentation, use the exact manufacturer product code MikroTik CRS305-1G-4S+IN. The short model reference is CRS305, while CRS305-1G-4S+IN identifies the exact product configuration.