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Green low-profile network card with two QSFP56 ports and metal bracket

DELL

DELL Broadcom 57508 Dual 100GbE QSFP56 LP 61RP9

SKU CH-89Z5-NNQAR

A dual-port 100GbE QSFP56 low-profile adapter for Dell PowerEdge servers

  • TypeRack
  • Dual 100GbE ports deliver high-bandwidth connectivity for demanding server workloads
  • Low-profile QSFP56 form factor fits dense Dell PowerEdge chassis including R640, R650, R660, R740, R750, R760, R840, R860, R940, R960
  • Broadcom 57508 controller provides dual-port 100GbE performance in a single adapter
  • Compatible with 11 Dell PowerEdge server models across multiple generations
  • Tested components with updated firmware ensure reliable deployment out of the box

Dual-port 100GbE connectivity

The Broadcom 57508 adapter provides two QSFP56 ports running at 100GbE each, designed for low-profile server slots. It targets administrators upgrading Dell PowerEdge platforms that require high-throughput networking without occupying a full-height bracket.

QSFP56 physical limits

Each port uses the QSFP56 form factor, which constrains cable reach and transceiver choice to modules built for that electrical and mechanical specification. The interface does not support larger QSFP-DD or legacy QSFP+ optics, so cable and module selection must match the 56-lane electrical interface exactly.

Low-profile rack integration

The low-profile bracket fits the dense chassis of the listed PowerEdge models, allowing installation in half-height slots where full-height cards cannot seat. Dual ports are mounted on a single bracket, reducing cabling complexity while keeping airflow paths clear in 1U and 2U rack configurations.

Puntos fuertes

  • Dual 100GbE ports deliver high-bandwidth connectivity for demanding server workloads
  • Low-profile QSFP56 form factor fits dense Dell PowerEdge chassis including R640, R650, R660, R740, R750, R760, R840, R860, R940, R960
  • Broadcom 57508 controller provides dual-port 100GbE performance in a single adapter
  • Compatible with 11 Dell PowerEdge server models across multiple generations
  • Tested components with updated firmware ensure reliable deployment out of the box

Especificaciones

BrandDELL
ModelBCM57508
TypeRack

Preguntas sobre este artículo

Which version of the 57508 adapter should I choose for a low-profile slot?

The LP designation indicates a low-profile bracket, and the QSFP56 ports accept 100GbE transceivers or direct-attach cables for dual-port connectivity.

What does the 100GbE rating mean once the card is installed in a server?

Each QSFP56 port operates at up to 100 gigabits per second, providing two independent high-speed Ethernet links for the host server.

Does the QSFP56 interface cap the link speed in practice?

The QSFP56 interface supports 100GbE per port, and the adapter is validated for the listed PowerEdge models including R650, R750 and R760.

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