StarTech SFP10GBTCST 10GBASE-T Copper SFP+ Transceiver Module

The StarTech SFP10GBTCST is a 10GBASE-T SFP+ transceiver that converts a fiber-style SFP+ port into a copper RJ45 connection — giving you 10 Gbps throughput over standard Cat6a or Cat7 structured cabling up to 30 meters. Designed as a Cisco SFP-10GB-T-X compatible replacement, it slots into Cisco switches and routers that carry an SFP+ cage without requiring a separate media converter or fiber infrastructure. If your rack wiring runs copper and your switches run SFP+ uplinks, this module closes that gap cleanly.

Overview

10GbE deployments frequently hit a compatibility wall when existing structured cabling is copper but switch uplinks are SFP+. The SFP10GBTCST solves that without re-pulling fiber — it conforms to IEEE 802.3an 10GBASE-T, the same standard your Cat6a patch panels and patch cables already support. The module operates at 3.3V DC, draws only 2.3W, and fits the same SFP+ cage form factor used across Cisco's switching line. At 58 grams and 69.8 mm long, it installs into a standard SFP+ slot in seconds with no tooling required.

Key Features

• 10 Gbps over Copper (IEEE 802.3an): Full 10GBASE-T throughput over Cat6a or Cat7 up to 30 meters — no fiber optic infrastructure needed, which matters when your IDF closets are already built around copper patch panels. Rewiring to fiber for a short uplink run is rarely worth the cost.
• RJ45 Connector: Standard RJ45 interface means you plug into existing copper runs with the patch cables already on your shelf. No specialty fiber connectors, no additional transceivers on the far end — just a standard Cat6a/Cat7 cable.
• 30-Meter Reach: Adequate for within-rack or same-closet switch-to-switch uplinks and short top-of-rack to aggregation runs. Plan cabling distances carefully — 10GBASE-T over copper is distance-sensitive, and this module is optimized for structured cabling scenarios under 30m.
• 2.3W Power Consumption: Draws 2.3 watts from the host switch's SFP+ port — significantly less than many active copper transceivers. In a fully populated 48-port switch with multiple SFP+ uplinks, power budget headroom matters, and this module won't push you over the switch's thermal ceiling.
• 3.3V DC Operating Voltage: Matches standard SFP+ port power specifications on Cisco hardware, so there's no risk of voltage mismatch damaging the host switch's port circuitry.
• Cisco SFP-10GB-T-X Compatible: Coded to match the Cisco SFP-10GB-T-X OEM part, which means Cisco IOS and NX-OS will recognize it without generating unsupported-transceiver warnings on compatible platforms. Verify your specific Cisco platform and software version before deploying in production — compatibility coding covers most but not all Cisco SKUs.
• 0°C to 70°C Operating Range: Covers standard commercial data center and IDF closet environments. If your network closet runs hot in summer or you're deploying in an industrial environment, confirm ambient temps stay within range — this is a commercial-grade module, not an extended-temp industrial variant.
• 4,598,430-Hour MTBF: That's over 524 years of mean time between failures under rated conditions — a useful number when evaluating long-term deployment reliability on a core uplink. It reflects component quality and design margin, not a guarantee, but it's a meaningful engineering benchmark for infrastructure-grade links.
• Storage Temperature Range (-40°C to 90°C): Broad storage tolerance means modules can be kept in warehouse inventory or unheated storerooms without risk of damage before installation.
• Up to 95% Non-Condensing Humidity: Handles the humidity levels typical of most indoor commercial and light-industrial environments. Not rated for outdoor or condensing-humidity exposure.

Integration & Compatibility

The SFP10GBTCST is coded for Cisco SFP-10GB-T-X compatibility and conforms to the SFP+ MSA (Multi-Source Agreement) mechanical and electrical standard. It is designed to work in Cisco switches and routers that support 10GBASE-T SFP+ modules. The RJ45 interface connects to any Cat6a or Cat7 copper run up to 30 meters — standard structured cabling plant that most enterprise and commercial buildings already have in place. For network switch deployments where fiber uplinks would require additional fiber patching or media conversion, this module simplifies the architecture. When planning uplink density across a PoE switch stack, confirm the aggregate SFP+ power budget accounts for copper transceiver power draw alongside PoE port loads. Refer to a network infrastructure planning guide if you're sizing uplink capacity for a multi-switch deployment. The module ships as a StarTech-branded third-party compatible part — sourced factory-new with no grey-market or parallel-import risk. Verify Cisco platform and IOS/NX-OS version compatibility against StarTech's published compatibility list before ordering for mission-critical uplinks.

Frequently Asked Questions

Q: What cable category is required to reach the full 30-meter distance with the SFP10GBTCST?

A: The SFP10GBTCST conforms to IEEE 802.3an 10GBASE-T, which specifies Cat6a or Cat7 cabling for distances up to 30 meters at 10 Gbps. Cat6 may work at reduced distances but is not the recommended infrastructure for reliable 10GBASE-T at full range.

Q: Will the SFP10GBTCST trigger an unsupported transceiver warning on Cisco switches?

A: The module is coded as a Cisco SFP-10GB-T-X compatible part and is designed to be recognized by Cisco IOS and NX-OS on supported platforms. However, compatibility varies by specific Cisco switch model and software version. Verify your platform against StarTech's published compatibility documentation before deploying in a production uplink.

Q: What is the power draw of the SFP10GBTCST, and will it affect my switch's power budget?

A: The module consumes 2.3W at 3.3V DC from the host switch's SFP+ port. This is within standard SFP+ port power specifications and is relatively low for a copper 10GbE transceiver. When fully populating multiple SFP+ uplink ports, factor the per-port draw into your switch's total power budget.

Q: Can the SFP10GBTCST be used in non-Cisco switches with SFP+ ports?

A: The module conforms to the SFP+ MSA standard and may function in other brands' SFP+ ports, but it is specifically coded and tested for Cisco SFP-10GB-T-X compatibility. Performance and recognition in non-Cisco hardware are not guaranteed by the manufacturer for this SKU.

Q: What is the operating temperature range of the SFP10GBTCST?

A: The module operates from 0°C to 70°C (32°F to 158°F), which covers standard commercial data center and indoor network closet environments. It is not rated for extended industrial temperature ranges — verify closet ambient temperatures before deploying in environments with limited climate control.

Q: What is the maximum transfer distance supported by the SFP10GBTCST?

A: The SFP10GBTCST supports a maximum transfer distance of 30 meters over Cat6a or Cat7 copper cabling at 10 Gbps. It is not suitable for longer runs — fiber-based SFP+ transceivers are the correct choice for distances beyond 30 meters.

Jerry Tildsen

The SFP10GBTCST is the module I reach for when a Cisco switch has open SFP+ uplink ports and the nearest aggregation device is 20–30 meters away over Cat6a copper — a scenario I see constantly in enterprise IDF-to-IDF links and top-of-rack aggregation runs. At 2.3W draw over a 3.3V DC port, it's one of the more power-efficient copper 10GbE transceivers available in this form factor, and the 4,598,430-hour MTBF tells you the component selection is serious infrastructure-grade.

Technical Highlights:

• IEEE 802.3an Compliance: Full 10GBASE-T standard adherence means you're not relying on proprietary signaling — any Cat6a/Cat7 infrastructure already certified to 10GbE spec will carry this link without re-qualification.
• 2.3W Power Draw: Low enough that even a fully-loaded Cisco switch with 48 PoE ports and multiple uplinks can accommodate several of these without pushing the chassis power supply into its ceiling — a real consideration in high-density wiring closets.
• 4,598,430-Hour MTBF: That's a meaningful reliability benchmark for a module sitting on a core uplink — it gives procurement teams a defensible number for asset lifecycle planning on a link that can't go down during business hours.

Deployment Considerations:

• Confirm your specific Cisco switch model and IOS/NX-OS version against StarTech's compatibility matrix before ordering — Cisco's transceiver recognition behavior varies by platform and software train, and a version mismatch can result in a disabled port even with a correctly coded module.
• The 30-meter limit is a hard ceiling — if your copper run measures 32 meters with patch cable slack included, you're out of spec. Measure actual installed length including both patch segments before committing to copper over fiber for this link.

The SFP10GBTCST is the right module for Cisco-based enterprise switching environments where short-run copper infrastructure is already in place and a 10GbE uplink needs to be provisioned without pulling fiber — particularly in campus IDF closets, co-location top-of-rack deployments, and structured-cabling-dense server room builds where the 30-meter reach covers the physical layout cleanly.