Dell 07TKND — Mellanox ConnectX-6 VPI HDR100 100Gb/s Single QSFP56 Adapter
Technical Identity
The Dell 07TKND is a Dell OEM-rebranded NVIDIA Mellanox ConnectX-6 VPI single-port adapter, built on the ConnectX-6 ASIC and qualified for the Dell PowerEdge platform. The port is a single QSFP56 cage running at 100Gb/s — software-selectable as InfiniBand HDR100 or 100GbE Ethernet (VPI dual-protocol). PCIe 4.0 x16 host interface. Hardware offloads include RoCE v2, IB verbs, RDMA, NVMe-oF, SR-IOV, and GPUDirect — making the card a fit for HPC clusters, AI training fabrics, storage networks, and dense 100G east-west Ethernet. Condition supplied by T.E.S IT-SOLUTIONS: Refurbished Grade A.
Specifications

Brand: Dell (OEM Mellanox ConnectX-6)
Dell P/N: 07TKND
NVIDIA equivalent silicon: ConnectX-6 VPI HDR100 (MCX653105A-EFAT family)
ASIC: Mellanox ConnectX-6
Ports: 1× QSFP56 (100Gb/s)
Protocol: VPI dual-protocol — InfiniBand HDR100 (100Gb/s) or 100GbE Ethernet
Host bus: PCIe 4.0 x16 (backwards compatible with PCIe 3.0 x16)
Offloads: RoCE v2, IB verbs, RDMA, NVMe-oF, SR-IOV, GPUDirect, T10-DIF
Qualification: Dell PowerEdge OEM firmware and packaging
Form factor: Standard PCIe card
Condition: Refurbished Grade A

What This Is NOT

NOT full HDR 200Gb/s. HDR100 maximum (100Gb/s, 4 lanes at 25.78125 Gb/s). For full HDR 200G use a ConnectX-6 HDR200 SKU such as MCX653106A-HDAT or Dell 0CY7GD.
NOT dual-port. Single QSFP56 only.
NOT NDR / 400G. ConnectX-6 generation tops at HDR / 200GbE — for NDR or 400GbE, use ConnectX-7.
NOT a standard NVIDIA retail card. Dell OEM firmware — verify outside PowerEdge before deploying.
NOT supplied with cables, QSFP56 transceivers, or low-profile brackets unless explicitly stated.

Compatibility

InfiniBand switches: Pairs with NVIDIA Quantum HDR switches (MQM8700 / MQM8790 series) at HDR100 — typically via split-port (2× HDR100 per HDR200 cage) or direct HDR100 ports. Subnet manager required (OpenSM or NVIDIA UFM).
Ethernet switches: Pairs with NVIDIA Spectrum / Spectrum-2 100GbE switches (SN2700, SN3700) and any standards-compliant 100GbE QSFP56 / QSFP28 switch.
Cables / transceivers: QSFP56 100G DAC, AOC, or optical transceivers (MCP1600 series, MFA1A00 series, MMA1B00 series). Backwards compatible with QSFP28 100GbE cables and optics in Ethernet mode.
Host platform: Best in Dell PowerEdge R-series / C-series with PCIe 4.0 x16. Will run in PCIe 3.0 x16 at half host bandwidth — sufficient to saturate 100Gb/s.
Drivers: NVIDIA MLNX_OFED, Dell OEM driver bundles, in-distro mlx5_core (RHEL / SLES / Ubuntu), Windows WinOF-2, VMware ESXi.

Frequently Asked Questions (FAQ)
Q. What is the Dell 07TKND?
The Dell 07TKND is an OEM-rebranded Mellanox ConnectX-6 VPI single-port adapter with one QSFP56 port running at 100Gb/s — software-selectable as InfiniBand HDR100 or 100GbE Ethernet. PCIe 4.0 x16 host bus. Dell PowerEdge qualified.
Q. Is the 07TKND HDR 200G capable?
No. The 07TKND is HDR100 only — 100Gb/s maximum. For full HDR 200Gb/s use a ConnectX-6 HDR200 SKU such as MCX653106A-HDAT or Dell 0CY7GD.
Q. Is the 07TKND the same as MCX653105A-EFAT?
The underlying silicon (ConnectX-6 VPI HDR100, single QSFP56) is identical. The Dell 07TKND ships with Dell OEM packaging and firmware; MCX653105A-EFAT is the NVIDIA retail variant.
Q. Can the 07TKND be used in non-Dell servers?
Often yes, but Dell OEM firmware may restrict — some non-PowerEdge BIOSes report unsupported vendor strings. We recommend flashing to NVIDIA generic firmware if the card is destined for HPE, Supermicro, Lenovo, or Intel hosts. Test before bulk deployment.
Q. What condition does T.E.S IT-SOLUTIONS supply?
Refurbished Grade A — every unit is EEPROM-verified, link-tested in both InfiniBand and Ethernet modes where bench topology allows, cosmetically inspected, and shipped from EU stock with anti-static packaging.
Why buy from T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS is a Europe-based NVIDIA Mellanox and data-center networking specialist serving HPC, AI, and enterprise procurement teams since 2007. Every unit is MPN-identified, EEPROM-verified, and cosmetically inspected before leaving our EU warehouse. Multi-currency B2B invoicing, worldwide express shipping, and free pre-sale technical consultation on switch / adapter / cable pairing are included.