MikroTik S-RJ01 RJ45 SFP 10/100/1000M Copper Module
MikroTik S-RJ01 is an RJ45 copper SFP module designed to convert a compatible Gigabit SFP port into a copper Ethernet interface. It supports 10Mbps, 100Mbps and 1000Mbps Ethernet connectivity and uses a standard RJ45 connector for connection over twisted-pair Ethernet cabling.
The S-RJ01 is designed for networking devices equipped with compatible Gigabit SFP ports. It can be useful when a router, switch or other networking device has an available SFP cage but the required network connection is standard copper Ethernet rather than fiber.
MikroTik specifies a 1.25Gbps data rate for the module and a transmission distance of up to 100 meters.
Convert a Gigabit SFP Port to RJ45 Ethernet
The main purpose of the MikroTik S-RJ01 is simple: it allows a compatible SFP interface to be used with a conventional RJ45 Ethernet cable.
Instead of installing a fiber optic transceiver and fiber cable, the S-RJ01 can be inserted into a compatible SFP slot and connected to a copper Ethernet device using Cat5 or Cat6 cabling.
This can be particularly useful when an existing switch or router has free SFP ports but the next network device is located within standard copper Ethernet distance.
10/100/1000Mbps Ethernet Support
The S-RJ01 supports three common Ethernet link speeds:
- 10Mbps Ethernet
- 100Mbps Fast Ethernet
- 1000Mbps Gigabit Ethernet
MikroTik documentation identifies the module as a 1000/100/10 Mbps RJ45 SFP and notes that it should be used with auto-negotiation enabled. Forced link speeds are not supported for the listed MikroTik compatibility scenarios.
RJ45 Copper Connectivity
The module uses a standard RJ45 connector, allowing it to work with conventional twisted-pair Ethernet cabling. MikroTik’s documentation identifies Cat5/Cat6 copper cabling for the S-RJ01.
This makes the module convenient for connecting a fiber-oriented network device to nearby copper Ethernet equipment such as switches, routers, servers, access points or other compatible network endpoints.
Up to 100 Meter Transmission Distance
MikroTik specifies a maximum transmission distance of 100 meters for the S-RJ01. This is appropriate for typical structured Ethernet cabling deployments where the copper link remains within the normal Ethernet distance limit.
Actual link performance depends on cable quality, cable category, installation conditions, electromagnetic interference and the capabilities of both connected devices.
1.25Gbps SFP Data Rate
The S-RJ01 has a specified data rate of 1.25Gbps. This is the SFP module’s stated data rate and should not be interpreted as a separate 1.25Gbps Ethernet link mode.
For Ethernet connectivity, the module supports 10Mbps, 100Mbps and 1000Mbps operation according to MikroTik’s compatibility documentation.
Compatible with Gigabit SFP Ports
The S-RJ01 is designed for use with compatible Gigabit SFP ports. MikroTik describes it as compatible with most Gigabit SFP ports available on various networking devices, subject to device and module compatibility.
MikroTik’s current RouterOS documentation lists the S-RJ01 as a natively supported module and provides compatibility information for a range of MikroTik routers and switches.
Compatibility with MikroTik Routers and Switches
The S-RJ01 can be used in many MikroTik devices equipped with compatible 1G SFP interfaces. MikroTik’s compatibility documentation specifically lists support across products such as RB5009, RB4011, RB3011, CCR1009, CCR2004-16G-2S+, CCR2116-12G-4S+, CRS305, CRS309, CRS318, CRS326 and CRS354, among others.
Compatibility is model-specific, so the SFP interface of the target device should always be checked before purchase or installation.
Hot-Pluggable SFP Design
The S-RJ01 uses the standard SFP form factor and is designed as a hot-pluggable module. This allows the module to be installed into a compatible SFP cage without requiring a separate copper Ethernet port on the networking device.
The module can therefore provide additional copper connectivity while preserving the original SFP-based hardware architecture of the router or switch.
Where to Use MikroTik S-RJ01
The S-RJ01 can be useful in a variety of networking situations where copper Ethernet connectivity is required through an available SFP interface.
- Connecting a Gigabit Ethernet device to an SFP switch port
- Adding copper connectivity to a router with free SFP ports
- Connecting nearby switches using Cat5/Cat6 cable
- Server connectivity through compatible SFP interfaces
- Enterprise network expansion
- ISP network equipment interconnection
- Temporary network installations
- Replacing a fiber module with copper connectivity where appropriate
- Mixed fiber and copper network architectures
S-RJ01 for MikroTik Switches
The S-RJ01 can be particularly useful with MikroTik switches that provide SFP ports but require a copper Ethernet connection for one of the network links.
For example, a switch can use optical SFP modules on some ports while an S-RJ01 is installed in another compatible SFP port to connect a copper Ethernet device.
S-RJ01 for MikroTik Routers
On a compatible MikroTik router, the S-RJ01 can convert an available Gigabit SFP interface into a copper RJ45 connection. This can provide additional flexibility when designing WAN, LAN or management connections.
The actual supported link rates depend on the router’s SFP interface and the S-RJ01 compatibility profile for that specific model.
Important: S-RJ01 Is Not a 10G RJ45 Module
The MikroTik S-RJ01 should not be confused with the MikroTik S+RJ10.
| Feature |
S-RJ01 |
S+RJ10 |
| Interface Type |
SFP RJ45 |
SFP+ RJ45 |
| Maximum Ethernet Speed |
1Gbps |
Up to 10Gbps |
| Supported Rates |
10/100/1000Mbps |
10/100/1000/2500/5000/10000Mbps |
| Typical Use |
Gigabit copper connection |
Multi-Gig / 10G copper connection |
MikroTik’s current product catalog separately identifies S-RJ01 as a 10/100/1000M RJ45 SFP and S+RJ10 as a multi-speed RJ45 module supporting up to 10Gbps.
Technical Specifications
| Specification |
Details |
| Brand |
MikroTik |
| Product Code |
S-RJ01 |
| Product Type |
RJ45 Copper SFP Module |
| Connector |
RJ45 |
| Ethernet Speeds |
10/100/1000Mbps |
| SFP Data Rate |
1.25Gbps |
| Maximum Distance |
100m |
| Cable Type |
Cat5/Cat6 Twisted Pair |
| Form Factor |
SFP |
| Fiber |
Not required |
| Wavelength |
Not applicable |
| MTBF |
Approximately 100,000 hours at 25°C |
| Operating Temperature |
0°C to +85°C |
Installation and Link Configuration
To use the S-RJ01, insert the module into a compatible SFP cage and connect the RJ45 port to the remote Ethernet device using suitable twisted-pair cabling.
For supported MikroTik devices, MikroTik recommends using auto-negotiation with the S-RJ01. Forced link speeds are not supported in the compatibility table for this module.
Always verify the target device’s SFP compatibility before installation, particularly when using the module in non-MikroTik equipment.
AI-Readable Product Facts
| Attribute |
Value |
| Brand |
MikroTik |
| Model |
S-RJ01 |
| Product Type |
RJ45 Copper SFP Module |
| Connector |
RJ45 |
| Ethernet Speed |
10/100/1000Mbps |
| Maximum Ethernet Speed |
1Gbps |
| SFP Data Rate |
1.25Gbps |
| Maximum Distance |
100m |
| Cable |
Cat5/Cat6 |
| Form Factor |
SFP |
| Fiber Required |
No |
| Operating Temperature |
0°C to +85°C |
| MTBF |
Approx. 100,000 hours at 25°C |
| Primary Application |
Convert compatible Gigabit SFP port to RJ45 Ethernet |
Frequently Asked Questions
What is MikroTik S-RJ01?
MikroTik S-RJ01 is an RJ45 copper SFP module that allows a compatible Gigabit SFP port to connect to a standard copper Ethernet cable.
What speed does MikroTik S-RJ01 support?
The S-RJ01 supports 10Mbps, 100Mbps and 1000Mbps Ethernet connectivity.
Is MikroTik S-RJ01 a 10G SFP module?
No. S-RJ01 is a Gigabit-class SFP copper module. It supports up to 1000Mbps Ethernet. MikroTik’s S+RJ10 is the separate SFP+ RJ45 module designed for speeds up to 10Gbps.
What is the maximum distance of S-RJ01?
MikroTik specifies up to 100 meters for the S-RJ01 over compatible copper Ethernet cabling.
Does S-RJ01 use an RJ45 connector?
Yes. The module has a standard RJ45 copper Ethernet connector.
Can S-RJ01 be used in MikroTik SFP ports?
Yes, it is designed for compatible Gigabit SFP ports. Exact compatibility should be checked against the specific MikroTik device.
Can S-RJ01 work at 100Mbps?
Yes. MikroTik’s compatibility documentation lists 100Mbps operation on supported devices, along with 10Mbps and 1000Mbps.
Does S-RJ01 require fiber?
No. S-RJ01 is a copper RJ45 SFP module and uses twisted-pair Ethernet cabling rather than optical fiber.
Is S-RJ01 compatible with SFP+ ports?
Compatibility depends on the specific SFP+ device. S-RJ01 is intended primarily for compatible Gigabit SFP interfaces and should not be assumed to work in every SFP+ port.
Buy MikroTik S-RJ01 in India
IPVOICE TECHNOLOGIES supplies MikroTik SFP modules, routers, switches, wireless products and networking accessories for enterprise, ISP, WISP and infrastructure deployments.
Contact our team for current MikroTik S-RJ01 pricing, GST billing, stock availability and project requirements.
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