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MikroTik CRS310-8G+2S+IN 2.5GbE Switch with Eight 2.5G Ports and Dual 10G SFP+ Uplinks

Brand MikroTik

Model Number CRS310-8G

EpicRise Warranty 1 Year

Product Highlights

• Eight 2.5 Gigabit Ethernet ports provide 2.5x faster speeds than standard gigabit for bandwidth-intensive workstations and servers

• Dual 10G SFP+ uplinks with multi-rate support (1G/2.5G/10G) deliver flexible high-speed backbone connectivity

• Marvell 98DX226S switch chip with dual-core ARM CPU enables hardware-offloaded Layer 3 routing and advanced RouterOS v7 features

• Rack-mountable design with included 19-inch ears fits standard enterprise network racks or desktop deployment

• Wide DC input range (18-57V) and industrial temperature rating (-40°C to +60°C) support diverse installation environments

Overview
Specifications
FAQ
User Guides
Reviews

The MikroTik CRS310-8G+2S+IN bridges the gap between traditional gigabit infrastructure and full 10G deployments. As offices upgrade to multi-gigabit connectivity, this switch delivers eight 2.5 Gigabit Ethernet ports for edge devices plus two 10 Gigabit SFP+ ports for uplinks—providing the throughput modern workstations and servers demand without the cost of full 10G switching at every port.

Built on the Marvell 98DX226S switching platform with an integrated dual-core 800 MHz ARM processor, the CRS310-8G+2S+IN runs RouterOS v7 or SwOS for maximum deployment flexibility. IT teams can implement VLANs, link aggregation, ACL rules, and hardware-offloaded Layer 3 routing—all in a compact form factor that installs in standard 19-inch racks or on desktop surfaces.

With 256 MB RAM, 32 MB flash storage, and support for jumbo frames, this Level 5 licensed switch handles enterprise traffic loads while maintaining low power consumption. The multi-rate SFP+ slots accept 1G, 2.5G, or 10G modules, allowing the switch to function as a 10-port 2.5G switch when needed.

Best For

The CRS310-8G+2S+IN serves enterprise access layer requirements where multi-gigabit edge connectivity meets 10G backbone infrastructure.

- Small to Mid-Size Office Networks: Deploy 2.5G connectivity to high-performance workstations, engineering systems, and file servers while aggregating traffic through 10G uplinks to core switches

- Data Center Edge Switching: Provide cost-effective 2.5G access ports for servers and storage systems that exceed gigabit requirements but don't justify full 10G port costs

- Video Production and Editing Facilities: Connect 4K/8K editing workstations and NAS systems at 2.5G speeds with 10G uplinks to shared storage infrastructure

- Network Lab and Testing Environments: Build flexible multi-gigabit test topologies with RouterOS v7 advanced routing features and VLAN segmentation

- Surveillance System Aggregation: Aggregate multiple high-resolution IP camera streams at 2.5G with 10G uplinks to recording servers and storage arrays

Key Features

- Eight 2.5 Gigabit Ethernet ports deliver 2.5x gigabit throughput for bandwidth-intensive applications without full 10G infrastructure costs

- Two 10G SFP+ ports with multi-rate support (1G/2.5G/10G) provide flexible uplink options to core switches and storage systems

- Marvell 98DX226S switching silicon with dual-core 800 MHz ARM CPU processes Layer 2/3 traffic with hardware offloading

- RouterOS v7 Level 5 license enables VLAN configuration, link aggregation (LACP), ACL rules, and hardware-accelerated Layer 3 routing

- SwOS compatibility option provides simplified pure switching operation for environments requiring web-only management

- Jumbo frame support handles oversized packets for storage protocols and high-throughput data transfers

- Wide 18-57V DC input range accommodates diverse power systems including PoE injectors and centralized DC distribution

- Industrial temperature rating (-40°C to +60°C) supports installations in non-climate-controlled spaces and edge locations

- Active fan cooling maintains thermal performance under sustained multi-gigabit traffic loads

- USB port with 1A power delivery enables external storage or reset functionality through RouterOS configuration

Quick Specs

Model	CRS310-8G+2S+IN
2.5G Ethernet Ports	8
10G SFP+ Ports	2 (multi-rate: 1G/2.5G/10G)
Switching Chip	Marvell 98DX226S
CPU	Dual-core ARM @ 800 MHz
RAM	256 MB
Flash Storage	32 MB
Operating System	RouterOS v7 / SwOS
RouterOS License	Level 5
Power Input	18-57V DC (5.5mm/2mm jack)
Max Power Consumption	34W (21W without accessories)
Operating Temperature	-40°C to +60°C
Cooling	Active (1 fan)
Dimensions	200 x 206.1 x 44 mm (body)
Rack Dimensions	217.5 x 200 x 47.1 mm (with ears)
USB Ports	1x Type-A (1A max)
MTBF	~200,000 hours @ 25°C

What's Included

- CRS310-8G+2S+IN network switch

- 19-inch rack mount ears

- Rubber feet for desktop placement

- 24V DC power adapter

- Product documentation

Product Details
Color	White
Power Source	DC-powered

What deployment scenarios benefit most from the CRS310-8G+2S+IN's 2.5G/10G port combination?

This switch fits access layer deployments where workstations, servers, or cameras need more than gigabit speed but full 10G switching at every port exceeds budget. The eight 2.5G ports connect edge devices while two 10G SFP+ uplinks aggregate traffic to core switches or storage systems. IT teams deploying WiFi 6/6E access points, 4K surveillance systems, or high-performance workstations gain 2.5x gigabit throughput without upgrading to full 10G infrastructure.

How does the CRS310-8G+2S+IN compare to the CRS312-4C+8XG for multi-gigabit switching needs?

The CRS310-8G+2S+IN provides eight 2.5G ports plus two 10G SFP+ uplinks at $219, while the CRS312-4C+8XG delivers eight 10G SFP+ ports plus four 25G SFP28 ports at higher cost. Choose the CRS310 when edge devices require 2.5G copper connectivity and budget constrains full 10G deployment. Select the CRS312 when all connected devices support SFP+ modules and require full 10G speeds with 25G uplink capacity.

Is the $219 price point justified for 2.5G switching compared to gigabit alternatives?

The CRS310-8G+2S+IN delivers 2.5x gigabit throughput per port with 10G uplinks for $219, positioning between basic gigabit switches and full 10G solutions. Organizations facing gigabit bottlenecks on workstations, NAS systems, or WiFi 6 access points gain immediate bandwidth relief without replacing all infrastructure to 10G. The Level 5 RouterOS license, hardware Layer 3 routing, and industrial temperature rating add value beyond pure port speed, making the cost reasonable for multi-gigabit access layer upgrades.

What systems and modules are compatible with the CRS310-8G+2S+IN's multi-rate SFP+ ports?

The two SFP+ ports accept 1G, 2.5G, and 10G SFP modules, supporting both copper and fiber connectivity. MikroTik provides an SFP module compatibility table on their wiki documentation. The 2.5G Ethernet ports use standard RJ45 connections compatible with IEEE 802.3bz (2.5GBASE-T) devices including WiFi 6 access points, NAS systems, and multi-gig network adapters. RouterOS v7 runs on ARM architecture and supports standard network protocols including VLANs, LACP, and SNMP for integration into existing management systems.

What is the maximum switching capacity and forwarding rate of the CRS310-8G+2S+IN?

The Marvell 98DX226S switching chip handles full wire-speed forwarding across all ports simultaneously. With eight 2.5G ports (20 Gbps aggregate) and two 10G SFP+ ports (20 Gbps aggregate), total switching capacity reaches 40 Gbps bidirectional (80 Gbps total fabric). MikroTik tested the switch using Xena Networks equipment per RFC2544 standards, confirming line-rate performance at 64, 512, and 1518-byte packet sizes with less than 0.1% packet loss.

Can the CRS310-8G+2S+IN provide Power over Ethernet to connected devices?

The CRS310-8G+2S+IN does not provide PoE output on any ports. The switch accepts 18-57V DC input for its own power but does not pass power to connected devices. Organizations requiring PoE for access points or cameras should use external PoE injectors or select a different MikroTik switch model with integrated PoE capabilities. The wide DC input range allows the switch to be powered by centralized DC systems or PoE-sourced power for the switch itself.

What routing and Layer 3 features does the CRS310-8G+2S+IN support?

RouterOS v7 on the CRS310-8G+2S+IN enables hardware-offloaded Layer 3 routing through the Marvell 98DX226S chip. The dual-core ARM CPU processes routing decisions while the switching silicon forwards packets at line rate. Supported features include inter-VLAN routing, static routes, and policy-based routing. For advanced dynamic routing protocols like OSPF or BGP, the ARM CPU handles processing which may not achieve full wire-speed forwarding under maximum load. Layer 2 features including VLANs, link aggregation, and ACL rules operate with full hardware offloading.

Can the CRS310-8G+2S+IN be managed remotely and integrated into network monitoring systems?

RouterOS v7 provides multiple management interfaces including Winbox (MikroTik GUI), web interface, SSH, and serial console. The switch supports SNMP for integration with network monitoring platforms like PRTG, Zabbix, or Nagios. Default IP address ships as 192.168.88.1 with username 'admin' and no password. The USB port enables local configuration backup or recovery through RouterOS. For simplified operation, SwOS firmware provides web-only management without advanced routing features but maintains basic VLAN and switching configuration.

How does the CRS310-8G+2S+IN handle heat dissipation and noise in office environments?

The switch uses active cooling with one internal fan to maintain operating temperatures across the -40°C to +60°C range. Actual power consumption measures approximately 10.5W at idle and increases by roughly 1W per active 2.5G link. Under full load with all ports active, the switch draws up to 21W (34W when powering USB devices). Fan noise levels are not specified in official documentation but active cooling typically produces audible noise. Organizations deploying in quiet office spaces should consider rack placement or desktop location where fan noise remains acceptable.