Looking for a high-quality SFP module to enhance your network performance? Our expertly curated collection of SFP modules offers the perfect solution for seamless and efficient data transmission. Whether you're upgrading your enterprise network or building a robust system for home or business, our range of SFP modules ensures exceptional compatibility, speed, and reliability.
SFP (Small Form-factor Pluggable) modules are compact, hot-swappable devices designed to connect network switches, routers, and other networking hardware. They support a variety of applications, from Ethernet and Fibre Channel to SONET/SDH. Our selection includes SFP modules designed to meet the needs of diverse setups, offering support for single-mode and multi-mode fibers, along with varying transmission speeds, including 1G, 10G, and beyond. At PEGASUSS, we provide SFP modules compatible with leading brands, ensuring seamless integration into your existing network infrastructure. From LC and SC connectors to options for extended transmission distances, our collection is tailored to deliver superior performance under any conditions.
SFP+ to RJ45 Compatibility Guide
Everything you need to know before connecting SFP+ modules to copper Ethernet ports.
What Is an SFP+ to RJ45 Module?
An SFP+ to RJ45 transceiver (also called a 10GBASE-T module) converts an SFP+ optical port on a switch or router into a standard copper RJ45 interface. This lets you run Cat5e, Cat6, or Cat6a patch cables directly into SFP+ slots — no fiber required.
Port & Module Compatibility
SFP+ slots are backward compatible: they accept both SFP (1G) and SFP+ (10G) modules.
10GBASE-T copper modules require a switch port that explicitly supports 10G SFP+.
Not all SFP+ ports support auto-negotiation down to 1G — always verify your switch's datasheet before ordering.
Confirm the slot's maximum power budget: 10GBASE-T modules draw significantly more power than fiber alternatives.
Supported Link Speeds
10GBASE-T copper modules typically support 100 Mbps / 1 Gbps / 10 Gbps auto-negotiation.
Maximum reach at 10G: 30 m (98 ft) — substantially shorter than fiber options.
At 1G speeds, distance can extend to 100 m (328 ft) with Cat5e or better.
Switch Vendor Coding
Many enterprise switches from Cisco, HPE/Aruba, Juniper, and Extreme Networks require vendor-coded transceivers. Generic or third-party modules may not be recognized unless coding restrictions are disabled in the switch CLI. Always verify OEM vs. compatible module requirements for your specific switch model before purchasing.
Cable Categories & Distance
Speed
Minimum Cable
Max Distance
10 Gbps
Cat6a
30 m (98 ft)
10 Gbps
Cat6
30 m (98 ft)
1 Gbps
Cat5e
100 m (328 ft)
Power & Heat Considerations
10GBASE-T copper SFP+ modules consume significantly more power (1–3 W per port) than fiber SFP+ modules (<1 W). In high-density deployments this generates substantially more heat, which can affect switch thermal management. Factor this into your rack cooling and power-budget planning before deploying at scale.
When to Choose Direct-Attach Copper (DAC) Instead
DAC cables (twinaxial copper) are a better fit when:
Distance is ≤7 meters (e.g., top-of-rack within a data center)
You need lower latency and near-zero power overhead
Cost is a priority — DACs are typically cheaper than active copper modules
You are connecting switches, servers, or storage within the same rack or adjacent racks
Shop Compatible In-Stock Products
The following verified in-stock products work with SFP+ to RJ45 deployments:
