MCX755106AS-HEAT: NVIDIA ConnectX-7 Dual-Port 200Gb/s NDR200 InfiniBand and 200GbE QSFP112 PCIe 5.0 x16 Adapter
Also listed as: ConnectX-7 200G QSFP112, MCX755106AS-HEAT-SP, MCX755106AS, MCX755106AC-HEAT · made by NVIDIA
The NVIDIA ConnectX-7 dual-port adapter (model MCX755106AS-HEAT) delivers dual 200Gb/s NDR200 InfiniBand or 200GbE connections via two QSFP112 ports across a PCIe 5.0 x16 host link. Offering aggregate bandwidth up to 400Gb/s, it accelerates enterprise multi-GPU nodes and high-frequency analytical databases with GPUDirect Storage (GDS) and hardware cryptographic offloads. Secondary buyers must verify QSFP112 cable compatibility, inspect thermal heatsink integrity, and ensure proper firmware revision via mstflint.
Specifications
| Part number | MCX755106AS-HEAT |
|---|---|
| Brand | NVIDIA |
| Made by | NVIDIA |
| Type | Network adapters |
| Other numbers | ConnectX-7 200G QSFP112, MCX755106AS-HEAT-SP, MCX755106AS, MCX755106AC-HEAT |
| Status | current |
| Interface | PCIe 5.0 x16 |
| Form factor | PCIe Standup Low Profile |
| Ports | 2x 200Gb/s QSFP112 |
| Speed | 200Gb/s NDR200 / 200GbE |
| Generation fit | PCIe Gen5 enterprise servers and AI clusters |
About the MCX755106AS-HEAT
MCX755106AS-HEAT is NVIDIA's ConnectX-7 dual-port 200Gb/s NDR200 InfiniBand and 200GbE QSFP112 network adapter over a PCIe 5.0 x16 host link. Delivering up to 400Gb/s aggregate bandwidth across two ports, it accelerates enterprise multi-GPU nodes, big data analytics, and high-availability AI fabrics with GPUDirect Storage (GDS) and hardware cryptographic offloads.
Compatibility
Compatible with PCIe 5.0 x16 slots in enterprise GPU servers and high-speed storage nodes. Features two QSFP112 cages supporting 200Gb/s NDR200 InfiniBand or 200GbE optical transceivers and copper cabling. Backward compatible with QSFP56 and QSFP28 cables. Requires adequate chassis airflow.
How to identify a genuine unit
The board carries an NVIDIA label showing model MCX755106AS-HEAT and ConnectX-7 200G QSFP112 specifications. Two QSFP112 ports are visible on the rear bracket with link LEDs. In system utilities, it reports two independent 200Gb/s ports supported by the mlx5_core kernel driver.
Buying used
Verify that both QSFP112 ports establish link cleanly under heavy traffic load. Inspect the heatsink mounting spring pins and check thermal sensor logs for signs of past overheating. Confirm that the card comes with the appropriate bracket for your server chassis.
Reference prices (last 14 days, updated 2026-10-27)
New: USD 2,450 (1 sighting, Oct 2026)
Used: USD 1,600 (1 sighting, Oct 2026)
All sightings
| Seller | Condition | Price | Note | Seen |
|---|---|---|---|---|
| serversupply.com | new | USD 2,450 | 2026-10-27 | |
| ebay.com | used | USD 1,600 | 2026-10-27 |
Prices seen on public listings on the dates shown, before tax and shipping. Not an offer.
Fits these models
Equivalent part numbers
- Dell 540-BDSJ Dell NVIDIA ConnectX-7 Dual Port 200GbE/NDR200 QSFP112 Adapter
FAQ
What is QSFP112 form factor?
QSFP112 is a 4x56Gbps PAM4 interface backward compatible with QSFP56 and QSFP28 form factors.
Does this card support dual-port active-active failover?
Yes, supporting high availability bonding and multi-pathing across independent fabrics.
Buying or selling MCX755106AS-HEAT?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- NVIDIA ConnectX-7 Adapter Cards User Manual, checked 2026-10-27