Dell Mellanox ConnectX-6 Dual-Port 100Gb QSFP56 PCIe NIC LP F6FXM 0F6FXM - Used
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Dell Mellanox ConnectX-6

Dual-Port 100Gb QSFP56 NIC | PCIe 4.0 x16 | Low-Profile | DPN: F6FXM / 0F6FXM

Dell Mellanox ConnectX-6 100G PCIe Card

Representative image. The device shipped is a genuine Dell Mellanox ConnectX-6 100Gb network adapter.

Product Condition & Key Features

This is a genuine Dell Mellanox ConnectX-6 Dual-Port 100Gb QSFP56 PCI Express 4.0 x16 Network Adapter Card (Part: F6FXM / 0F6FXM) in excellent, fully tested working condition. Pulled from a clean, operational server node, this card has been verified for link speed compliance and clean data transmission across both ports.

  • Dual-Port QSFP56 100Gb: Supports up to 100 Gbps data transfer speed per port, enabling massive bandwidth links for clustered databases, virtualization, and storage pools.
  • PCIe Gen 4 x16 Interface: Designed for high-speed PCI Express 4.0 slots, doubling bandwidth lanes over older Gen 3 adapters while remaining fully backwards compatible.
  • RoCE v1/v2 & GPUDirect RDMA: Features hardware-based RDMA over Converged Ethernet and GPU acceleration to maximize transaction performance and bypass host CPU latency.
  • Low-Profile (LP) Bracket Installed: Fitted with a low-profile mounting bracket, perfect for deployment inside 1U/2U server riser setups.

Technical Specifications

Specification Detail
Brand Dell / Mellanox Technologies
Model Series ConnectX-6 (CX6) VPI / Dx family
Dell Part Number (DPN) F6FXM (0F6FXM)
Product Type Dual-Port 100Gb QSFP56 PCIe Network Interface Card (NIC)
Port Count Dual Port (2x Ports)
Connector Interface QSFP56 (supports QSFP56, QSFP28, and QSFP+ modules/cables)
Interface Speed Up to 100 Gbps per port (100GbE / HDR100 InfiniBand)
Host Interface PCI Express 4.0 x16 (compatible with x16 slots)
Bracket Profile Low-Profile (LP) bracket installed
Advanced Offloads RoCE v1/v2 (RDMA), SR-IOV, GPUDirect RDMA, ASAP², Secure Boot
Protocol Support Ethernet and InfiniBand (dependent on system configuration)
Server Compatibility Dell PowerEdge servers & standard PCIe Gen3/Gen4 systems

Important Installation & Compatibility Warnings

PCIe Slot Compatibility: Requires a physical **x16 PCIe slot** (running at Gen 3 or Gen 4). It will **NOT** fit in x1, x4, or x8 PCIe slots unless they are open-ended, and it requires 16 active lanes for full 200Gbps aggregate performance.

Low-Profile Bracket Installed: This card is fitted with a **Low-Profile (LP) bracket**. It is designed to slide into space-constrained 1U/2U server riser bays or SFF desktop cases. Standard full-height brackets are **NOT** included.

Transceivers & Cabling Not Included: The onboard QSFP56 cages are bare and empty. Optical transceivers (optics) and fiber patch / Direct Attach Copper (DAC) cables are not included.

Protocol Configurations: ConnectX-6 VPI hardware supports both **Ethernet and InfiniBand (HDR100)** protocols. Depending on system firmware configurations, ports can be switched to operate in Ethernet or InfiniBand mode using Mellanox MFT tools.

30-Day Functionality Guarantee

We guarantee this network adapter card registers in system BIOS/UEFI, updates firmware, and establishes stable link rates across both QSFP56 ports for 30 days from delivery.

  • Covers UEFI initialization, PCIe interface bus alignment, and optical cage connectivity.
  • Buyer is responsible for return shipping costs.

Secure Packing & Dispatch

The network card is packaged inside a static-safe ESD protection sleeve, secured in bubble cushioning, and shipped inside a rigid box to prevent shipping impacts.

  • Handling Time: 1 Business Day.
  • Tracking details provided instantly upon dispatch.