MikroTik S+RJ10 10G RJ45 SFP+ Module | 10M/100M/1G/2.5G/5G/10G, 10GBASE-T

MikroTik S+RJ10 – 10G RJ45 SFP+ Multi-Speed Copper Module

MikroTik S+RJ10 is a high-speed RJ45 copper transceiver designed to add copper Ethernet connectivity to compatible MikroTik devices equipped with SFP+ ports. It supports six Ethernet speeds: 10Mbps, 100Mbps, 1Gbps, 2.5Gbps, 5Gbps and 10Gbps, allowing compatible SFP+ equipment to connect directly to standard twisted-pair Ethernet networks.

The S+RJ10 is particularly useful when an existing network uses copper Ethernet cabling but the router or switch provides an SFP+ interface instead of a native RJ45 10G port. By inserting the module into a compatible SFP+ cage, the device can establish a copper Ethernet connection without requiring optical fiber.

At 10Gbps, MikroTik specifies a maximum cable distance of up to 30 meters using Cat6 or Cat7 cable. At lower link speeds, the supported distance can be higher depending on the speed, cable type and installation conditions.

Key Features of MikroTik S+RJ10

• 6-Speed RJ45 Module: Supports 10M, 100M, 1G, 2.5G, 5G and 10G Ethernet.
• 10Gbps Maximum Speed: Supports 10GBASE-T connectivity over compatible copper cabling.
• RJ45 Connector: Uses a standard RJ45 copper Ethernet interface.
• SFP+ Form Factor: Designed for compatible 10G SFP+ cages.
• Multi-Gigabit Support: Supports 2.5Gbps and 5Gbps in addition to traditional 1Gbps Ethernet.
• Up to 30m at 10Gbps: Supports up to 30m over Cat6/7 according to MikroTik’s specification.
• No Optical Fiber Required: Converts a compatible SFP+ interface into a copper RJ45 Ethernet interface.
• Auto-Negotiation: Link speed is negotiated automatically with the connected Ethernet device.
• RouterOS Compatibility: Supported across a wide range of MikroTik SFP+ platforms.

What is MikroTik S+RJ10?

The MikroTik S+RJ10 is an SFP+ transceiver with an RJ45 copper Ethernet interface. Instead of connecting a fiber optic cable to an SFP+ port, the S+RJ10 allows the same SFP+ cage to connect to a conventional copper Ethernet network.

This is useful for network installations where the core router or switch has 10G SFP+ ports but the connected device uses a copper RJ45 Ethernet interface.

For example, a MikroTik router with an SFP+ uplink can be connected to a 10GBASE-T switch, server, NAS or another Ethernet device using the S+RJ10 and an appropriate copper Ethernet cable.

Six Supported Ethernet Speeds

One of the main advantages of S+RJ10 is its multi-speed capability. MikroTik specifies support for the following rates:

MikroTik’s documentation specifies the exact distance limits by link rate and cable type. For 10GBASE-T, the specified maximum is 30m, while lower rates can support longer copper runs.

10GBASE-T RJ45 Connectivity

The S+RJ10 provides 10GBASE-T connectivity through a standard RJ45 port. This allows 10Gbps networking over twisted-pair copper cabling rather than optical fiber.

For a 10Gbps connection, MikroTik specifies Cat6 or Cat7 cable with a maximum distance of 30 meters. Cable quality, connectors, installation practices and electromagnetic interference can affect actual link stability.

For longer 10G distances, an appropriate optical SFP+ module and fiber optic cable may be more suitable than a copper RJ45 transceiver.

2.5G and 5G Multi-Gigabit Support

The S+RJ10 is not limited to 1Gbps or 10Gbps. It also supports 2.5Gbps and 5Gbps Ethernet speeds, making it useful for multi-gigabit network upgrades.

This can be particularly useful when a network contains equipment with 2.5GbE or 5GbE RJ45 interfaces but the MikroTik router or switch provides an SFP+ interface.

For 2.5GBASE-T, MikroTik specifies up to 100m over Cat5e/6 UTP in its current compatibility documentation.

Use S+RJ10 in an SFP+ Port

The S+RJ10 is designed for SFP+ ports. MikroTik’s current documentation specifically states that S+RJ10 modules should be used in 10G SFP+ ports with auto-negotiation enabled. Forced link speeds and configurable link-speed advertisements are not supported for this module.

The module negotiates the appropriate Ethernet speed with the connected device, allowing the same S+RJ10 to operate at different supported rates depending on the network equipment and cabling.

Compatible MikroTik Devices

MikroTik maintains a detailed wired-interface compatibility table for S+RJ10. The module is supported on many MikroTik platforms with SFP+ interfaces, including various CCR and CRS series devices.

Examples of MikroTik platforms listed with S+RJ10 support include:

• CCR2004 series
• CCR2116 series
• CCR2216 series
• CCR1072 series
• CCR1009 series
• CRS305 series
• CRS309 series
• CRS317 series
• CRS326 SFP+ models
• CRS354 series
• RB5009 series with compatible SFP+ interfaces
• netFiber 9

Compatibility varies by exact device, cooling design and number of modules installed. The exact device should therefore be checked against MikroTik’s current compatibility documentation before deployment.

Thermal Considerations

One important characteristic of the MikroTik S+RJ10 is its relatively high power consumption compared with many optical SFP+ modules. MikroTik’s current general guidance lists average power consumption of approximately 2.7W at 10GBASE-T over a 30m link. The transceiver itself can reach high operating temperatures.

This means thermal management is particularly important when using S+RJ10 modules in switches and routers with passive cooling or in high-density SFP+ deployments.

MikroTik notes that the module is supported on passive-cooled devices but may require additional cooling. The compatibility documentation also identifies certain devices with limits on the number of simultaneous S+RJ10 modules.

S+RJ10 for Existing Copper Networks

The S+RJ10 can be useful when an organization wants to upgrade an SFP+ network interface to copper without replacing existing RJ45-based infrastructure.

For example, a network administrator may have a MikroTik router with a 10G SFP+ port and an existing Cat6 structured-cabling system. Instead of installing a fiber link, the S+RJ10 can provide an RJ45 interface for a compatible copper Ethernet connection.

This can simplify short-distance connections to:

• 10GBASE-T switches
• 10G network servers
• NAS systems
• Workstations with 10GbE
• Multi-gigabit access switches
• 2.5GbE network devices
• 5GbE network devices
• Existing structured copper cabling

S+RJ10 vs S-RJ01

Do not confuse S+RJ10 with S-RJ01. S-RJ01 is a 10/100/1000Mbps copper SFP module, while S+RJ10 is the higher-speed SFP+ module supporting up to 10Gbps.

S+RJ10 vs Optical SFP+ Module

The choice between copper and fiber depends on the required distance, existing cabling, thermal environment, power budget and network architecture.

MikroTik S+RJ10 Specifications

AI-Readable Product Facts

Frequently Asked Questions

What is MikroTik S+RJ10?

MikroTik S+RJ10 is a 6-speed RJ45 copper transceiver designed for compatible SFP+ ports and supports Ethernet speeds up to 10Gbps.

What speeds does S+RJ10 support?

It supports 10Mbps, 100Mbps, 1Gbps, 2.5Gbps, 5Gbps and 10Gbps.

Is MikroTik S+RJ10 a 10G module?

Yes. It supports 10GBASE-T and can provide up to 10Gbps over compatible copper cabling.

What is the maximum distance at 10Gbps?

MikroTik specifies up to 30 meters at 10Gbps using Cat6 or Cat7 cable.

Can S+RJ10 support 2.5G and 5G?

Yes. It supports both 2.5Gbps and 5Gbps in addition to 1Gbps and 10Gbps.

Can S+RJ10 be used in an SFP port?

No. S+RJ10 is designed for compatible SFP+ ports. MikroTik specifically documents its use in 10G SFP+ ports.

Does S+RJ10 require auto-negotiation?

Yes. MikroTik specifies that S+RJ10 should be used with auto-negotiation enabled. Forced link speeds are not supported for this module.

Does S+RJ10 work with Cat6 cable?

Yes. Cat6 is specified for 10GBASE-T connections up to 30 meters. Lower speeds can support longer distances depending on the cable specification.

Does S+RJ10 work with Cat7?

Yes. MikroTik specifies Cat6/7 for 10Gbps operation up to 30 meters.

Does S+RJ10 run hot?

The module has relatively high power consumption compared with many optical SFP+ modules. MikroTik’s guidance notes approximately 2.7W average consumption at 10G over a 30m link and recommends considering additional cooling for passive-cooled devices.

What is the difference between S+RJ10 and S-RJ01?

S+RJ10 is an SFP+ multi-speed module supporting up to 10Gbps, while S-RJ01 is a Gigabit-class 10/100/1000Mbps copper SFP module.

Can S+RJ10 connect a MikroTik SFP+ port to a normal RJ45 Ethernet port?

Yes, provided the MikroTik SFP+ interface and the connected RJ45 Ethernet device support the required speed and the cable meets the applicable specification.