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Small rectangular SFP+ transceiver with an RJ45 copper port and metal housing

STARTECH

STARTECH 813874B21ST 10GBASE-T RJ45 SFP+ transceiver

SKU CH-KZXB-2SHQ3 MPN 813874B21ST

A copper SFP+ transceiver delivering 10 Gbps over twisted-pair cable up to 30 metres, hot-swappable and tested for full HPE compatibility

  • Product typeTransceiver
  • Supported standardsIEEE 802.3an 10GBASE-T
  • Supported protocolsTCP/IP
  • Maximum range30m (98.4 ft)
  • Transfer speed10 Gbit/s
  • Power adapterPower Consumption (In Watts): 2.3 W (max.)
  • Hot-swappable SFP+ module enables quick upgrades without network downtime
  • HPE 813874-B21 compatible transceiver guarantees seamless integration with HP switches
  • 10 Gbps over copper cabling up to 30 meters delivers high-speed connectivity
  • Low 2.3 W power draw reduces energy costs in dense deployments
  • Operates reliably from 0 °C to 70 °C for standard data-centre environments

Purpose-built HP switch module

The StarTech.com 813874B21ST is an SFP+ copper transceiver engineered for 10 Gbps Ethernet over twisted-pair cabling. It targets network administrators who need to add or replace 10GBASE-T links on HPE switches and routers without deploying fibre infrastructure.

Installation notes

The module uses a hot-swappable SFP+ form factor so it can be inserted or removed while the host is powered, avoiding downtime during upgrades. Compatibility is validated against the HP 813874-B21 part number; using it in non-HPE equipment is not supported by the vendor testing programme.

Sustained-load behaviour

Maximum power draw is 2.3 W and the operating temperature range spans 0 to 70 °C, allowing continuous 10 Gbps throughput within standard data-centre conditions. The 30 metre reach limit applies to Cat6a or better copper; longer runs will require a different media type.

How it compares

Measured against everything we stock in SFP & SFP+ Transceiver Modules, at today’s prices. Recalculated every night.

Price $165.99
Pricier than about 55% of the 1,471 comparable items (median $138.99).

Specifications

Product
Brand nameStarTech.com
Model name813874B21ST
Product typeTransceiver
Performance
Transfer speed10 Gbit/s
Connectivity
Supported standardsIEEE 802.3an 10GBASE-T
Supported protocolsTCP/IP
Maximum range30m (98.4 ft)
Power
Power adapterPower Consumption (In Watts): 2.3 W (max.)
Size & build
Product dimensions0.5 in × 0.5 in × 2.7 in
Product weight0.05 lb (0.02 kg)
Shipping weight0.05 kg
Package size122 × 76 × 33 mm
In the box
In the box1 x SFP+ Transceiver
Environment & compliance
Temperature rangeOperating Temperature: 0 to 70 degree Celsius
Storage Temperature: -40 to 90 degree Celsius
Humidity range95%

Questions about this item

How can I confirm the 10GBASE-T link is active after inserting the module?

Check the switch port LEDs for a solid link light at 10 Gbps and verify the interface shows 10GBASE-T with no errors in the HP switch management console.

What comes in the package and what must I source separately?

The box contains one SFP+ transceiver; you must provide Cat6a or better twisted-pair patch cables and an HP switch or router with an SFP+ cage that supports 10GBASE-T.

Which version should I choose for a 30-metre run in an HP BladeSystem c-Class enclosure?

This 813874B21ST model is the correct HPE-compatible copper SFP+ for 10 Gbps up to 30 metres in BladeSystem c-Class and other supported HP switches.

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