Description
The NVIDIA Mellanox MCX623105AN-VDAT is a ConnectX-6 Dx EN Ethernet adapter with a single QSFP56 port. It supports 1, 10, 25, 40, 50, 100, and 200Gb/s Ethernet and connects over PCIe Gen 4.0 x16, with backward compatibility to Gen 3.0. Crypto and Secure Boot are both disabled on this model. It ships with a tall bracket in a half-height, half-length form factor.
ConnectX-6 Dx provides RoCE, NVGRE and VXLAN overlay offloads, Open vSwitch offload through ASAP², SR-IOV, NVMe over Fabrics target offloads, and IEEE 1588v2 PTP with an integrated hardware clock.
Technical Specifications:
| Specification | Details |
|---|---|
| Brand | NVIDIA Mellanox |
| MPN | MCX623105AN-VDAT |
| NVIDIA SKU | 900-9X6AG-0018-ST0 |
| Product Type | Ethernet Adapter Card |
| Controller | ConnectX-6 Dx |
| Form Factor | HHHL, 5.59 x 2.71 in (142.00 x 68.90mm) |
| Ports | 1 x QSFP56 (copper and optical) |
| Ethernet Data Rate | 1/10/25/40/50/100/200Gb/s |
| Key Protocols | 200GBASE-CR4/KR4/SR4, 100GBASE-CR4/KR4/SR4/CR2/KR2/SR2, 50GBASE-R2/R4, 40GBASE, 25GBASE-R, 10GBASE, 1000BASE-CX/KX |
| Host Interface | PCIe Gen 3.0/4.0, 16.0GT/s x16 |
| Crypto | Disabled |
| Secure Boot | Disabled |
| Bracket | Tall bracket |
| Typical Power (passive cables, Gen 4.0) | 16.94W |
| Maximum Power (passive cables, Gen 4.0) | 24W |
| Max Power per QSFP56 Port | 5W |
| Airflow (heatsink to port, 55°C) | 600LFM passive cable; 950LFM active 4.55W cable |
| Operating Temperature | 0°C to 55°C |
| Non-Operating Temperature | -40°C to 70°C |
| Operating Humidity | 10% to 85% RH |
| Operating Altitude | 3050m |
| Safety / EMC | CB, cTUVus, CE / CE, FCC, VCCI, ICES, RCM |
| Compliance | RoHS |
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Return Policy (Short Summary)
We offer a 30-day return window for most unopened, factory-sealed items.
Returns must be authorized before shipping back and must include all original packaging and accessories. Opened or used items are not returnable unless defective.
Some products—such as custom orders, special-order items, audio gear, software, and LED video walls—are non-returnable. Non-defective returns may be subject to a 20–30% restocking fee, and customers are responsible for return shipping costs.
For damaged or incorrect items, please contact us immediately.
From Scope to Sign-Off
A structured delivery process designed to reduce risk and keep projects moving.
Plan
Discovery, site review, requirements gathering, and project alignment. We define scope, constraints, and success criteria before any design work begins.
- Discovery calls & stakeholder interviews
- On-site survey & infrastructure review
- Requirements & use-case documentation
- Project scope, timeline & milestone alignment
Engineer
System design, schematics, signal flow, BOM development, and documentation. Every project leaves this phase with a complete engineering package.
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- Equipment selection & BOM development
- Rack layout & control system design
- As-built documentation package
Deploy
Procurement, logistics, installation, programming, commissioning, and training. We own the delivery from first shipment to final handoff.
- Authorized procurement & logistics coordination
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- Commissioning, testing & end-user training
Support
Monitoring, maintenance, lifecycle planning, and long-term service agreements. We stay engaged long after project close.
- 24/7 remote system monitoring
- Preventive & reactive maintenance
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