What are the port configuration and speeds of 900-9X5AD-0056-ST1?

Dual QSFP28 ports support 100 Gigabit Ethernet primary, with backward compatibility to 50/40/25/10 Gigabit Ethernet and 1GbE. Aggregate throughput reaches 200Gbps full-duplex, ideal for high-performance data center deployments requiring non-blocking wire-speed forwarding.

Which PCIe interface does the ConnectX-5 EN MCX516A-CCAT use?

PCIe Gen3.0 x16 interface provides 128Gbps bandwidth, fully supporting dual 100GbE without bottlenecks. Compatible with PCIe 3.0 slots in enterprise servers from Dell, HPE, Lenovo, Supermicro.

Does this NIC support RDMA for HPC workloads?

Yes, supports RDMA over Converged Ethernet (RoCE) for direct memory access between systems, reducing latency and CPU usage. Essential for HPC clusters, AI training, and large-scale simulations with massive data movement.

What hardware offloads are provided?

Includes TCP/UDP/IP checksum offload, TCP segmentation offload (TSO), Large Receive Offload (LRO), Receive Side Scaling (RSS). These offloads free CPU cycles for applications, ensuring predictable performance under high network loads.

Is it compatible with virtualization platforms?

Optimized for VMware, Hyper-V, KVM with SR-IOV and VMDq support for VM network isolation and scaling. Handles high I/O virtualization in cloud and NFV environments efficiently.

What form factor and bracket does it use?

Plug-in card with tall bracket (full-height), PCIe half-length design fits standard server chassis. Internal fiber QSFP28 connectivity for rack-mounted and tower servers.

900-9X5AD-0056-ST1 - NVIDIA 900-9X5AD-0056-ST1 ConnectX-5 2x100GbE QSFP28 PCIe 3.0x16

Name: NVIDIA 900-9X5AD-0056-ST1 ConnectX-5 2x100GbE QSFP28 PCIe 3.0x16
Brand: NVIDIA
SKU: 900-9X5AD-0056-ST1
Price: 430 USD
Availability: InStock

900-9X5AD-0056-ST1 - NVIDIA 900-9X5AD-0056-ST1 ConnectX-5 2x100GbE QSFP28 PCIe 3.0x16 | US IT Hardware

Product overview

The NVIDIA 900-9X5AD-0056-ST1, model MCX516A-CCAT from ConnectX-5 EN series, is a high-performance dual-port 100 Gigabit Ethernet network interface card designed for data centers, cloud infrastructure, and HPC environments. Featuring two QSFP28 ports supporting 100/50/40/25/10 Gigabit Ethernet speeds with full backward compatibility to 1GbE, it leverages PCIe 3.0 x16 interface for maximum bandwidth utilization. Advanced hardware offloads including RDMA over Converged Ethernet (RoCE), NVMe-oF, TCP segmentation, checksum offload, and Receive Side Scaling (RSS) reduce CPU overhead, enabling ultra-low latency and predictable performance under heavy loads. Ideal for storage replication, real-time analytics, virtualization, and distributed computing, this plug-in card fits rack/tower servers from Dell, HPE, Lenovo, Supermicro with PCIe Gen3 x16 slots. Tall bracket design suits standard chassis. Provides reliable, high-throughput connectivity for east-west traffic in scale-out architectures.

Dual QSFP28 ports deliver 200Gbps aggregate 100GbE throughput.
PCIe 3.0 x16 interface ensures full wire-speed performance.
RDMA and hardware offloads minimize CPU overhead in HPC.
Supports 100/50/40/25/10/1GbE for broad compatibility.
Tall bracket fits standard rack and tower servers.
RoCE, NVMe-oF enable low-latency storage networking.

Expedited and overnight shipping options are available at checkout, priced by destination and service.
Purchase orders accepted from qualified institutions.
Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Manufacturer part #	900-9X5AD-0056-ST1
Brand	NVIDIA
Condition	Refurbished
Product Line	ConnectX-5 EN
Product Type	Network Interface Card
Offload Engine	RDMA, RoCE, NVMe-oF, TSO, RSS, LRO
Data Link Protocol	GigE, 10GigE, 25GigE, 40GigE, 50GigE, 100GigE
Ethernet Standards	100/50/40/25/10/1 Gigabit Ethernet
Connectivity Technology	Wired Fiber

Network & Communication

Compatible systems

Broad enterprise server compatibility via PCIe 3.0 x16; requires QSFP28 transceivers/cables.

Dell PowerEdge
Model: R740, R750
Form factor: 2U Rack
Generation: 14G,15G
PCIe 3.0 x16 slot required
HPE ProLiant DL
Model: 380 Gen10
Form factor: 2U Rack
Generation: Gen10
PCIe 3.0 x16 compatible
Lenovo ThinkSystem
Model: SR650
Form factor: 1U Rack
Generation: 2nd Gen
PCIe Gen3 slots
Supermicro SuperServer
Model: SYS-4029GP-TR
Form factor: 4U Rack
Generation: Current
HPC optimized

Best for

Data Center Top-of-Rack
High-density server interconnects with 200Gbps aggregate throughput for east-west traffic.
HPC Clusters
Low-latency RDMA for parallel processing, simulations, large-scale compute node data movement.

Details

Shipping, warranty & returns

Customer reviews

No reviews yet — be the first to review this part.

Form Factor	Plug-in Card, Tall Bracket
Bracket Height	Tall (Full Height)

Ports	2 x 100 Gigabit QSFP28
Host Interface	PCI Express 3.0 x16
Interface Type	QSFP28

NVIDIA 900-9X5AD-0056-ST1 ConnectX-5 2x100GbE QSFP28 PCIe 3.0x16