Dell 0F6FXM — Mellanox ConnectX-6 Dx Dual-Port 100GbE QSFP56 Adapter
Technical Identity
Dell OEM Mellanox ConnectX-6 Dx EN network adapter (Dell PN 0F6FXM): dual-port 100GbE QSFP56 on a PCIe 4.0 x16 host interface. Dell PowerEdge validated. Hardware offloads include RoCE v2, NVMe-oF / NVMe/TCP, VXLAN/NVGRE/GENEVE encap, SR-IOV, ASAP² (OVS offload), and inline IPsec / TLS crypto (subject to OEM SKU build). ConnectX-6 Dx is the Ethernet-only enhanced-security member of the ConnectX-6 family. Condition: Refurbished Grade A — EEPROM-verified, link-tested, EU stock.
Specifications

Brand: Dell (OEM Mellanox ConnectX-6 Dx EN)
Dell PN: 0F6FXM
Ports: 2× 100GbE QSFP56
Protocol: Ethernet only (ConnectX-6 Dx, no InfiniBand)
Host interface: PCIe 4.0 x16
Qualification: Dell PowerEdge
Offloads: RoCE v2, NVMe-oF, NVMe/TCP, VXLAN/NVGRE/GENEVE, SR-IOV, ASAP² OVS, inline IPsec/TLS crypto (OEM build dependent)
Condition: Refurbished Grade A

What This Is NOT

NOT InfiniBand. ConnectX-6 Dx is Ethernet-only. For HDR/HDR100 InfiniBand on the same QSFP56 footprint, use a true VPI ConnectX-6 (MCX653105A-* / MCX653106A-*).
NOT 25GbE or 200GbE per port. 100GbE per port (2× QSFP56). For 25GbE Dell NICs see the ConnectX-4 Lx / ConnectX-6 Lx family; for 200GbE see ConnectX-6 Dx 200GbE SKUs.
NOT a standard NVIDIA retail card. Dell OEM firmware — validate behavior outside PowerEdge before deploying in third-party servers.
NOT supplied with QSFP56 transceivers, AOC, or DAC cables.

Compatibility
Pairs with Spectrum-2 / Spectrum-3 / Spectrum-4 Ethernet switches (MSN3700, MSN4600C, SN5600) and any standards-based 100GbE QSFP56 / QSFP28 top-of-rack switch. On the link side use 100GbE QSFP56 / QSFP28 DAC, AOC, or SR4/LR4 transceivers — examples: MCP1600-C001E30N (1m DAC), MFA1A00-C003 (3m AOC), MMA1B00-C100D (SR4 transceiver). Host: Dell PowerEdge 14G / 15G servers (R640, R740, R750, R7525) with a free PCIe 4.0 x16 slot — verify the exact OEM whitelist for non-Dell chassis. Driver stack: MLNX_OFED / DOCA-Host / inbox kernel drivers on RHEL, Ubuntu, SLES, ESXi, Windows Server.
Frequently Asked Questions (FAQ)
Q. What is the Dell 0F6FXM?
Dell OEM ConnectX-6 Dx EN: dual-port 100GbE QSFP56. PowerEdge qualified. RoCE v2, NVMe-oF, VXLAN/NVGRE.
Q. Is 0F6FXM InfiniBand capable?
No — Ethernet EN only (ConnectX-6 Dx).
Q. Is 0F6FXM Crypto Enabled?
Crypto status depends on OEM build — verify with Dell documentation for this specific PN.
Q. Can 0F6FXM be used in non-Dell servers?
Possibly — OEM firmware may restrict. Verify before deploying.
Q. What condition does T.E.S supply?
Refurbished Grade A — EEPROM-verified, link-tested, EU stock.
Why buy from T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS is a Europe-based data-center networking specialist. Every unit is MPN-identified, EEPROM-verified, and cosmetically inspected before leaving our EU warehouse. Multi-currency invoicing, worldwide express shipping, and free pre-sale technical consultation included.