What is the maximum bandwidth supported by the ConnectX-5 Ex EN 900-9X5AD-0056-ST7?

The adapter delivers 200Gb/s aggregate bandwidth through two 100GbE QSFP28 ports. The PCIe Gen 4.0 x16 interface provides 256Gb/s bus bandwidth (16 lanes × 16GT/s), supporting full-rate operation of both network ports simultaneously at 100Gb/s each without bottlenecking.

Which Ethernet speeds does this adapter support?

The ConnectX-5 Ex EN supports 10/25/40/50/100 Gb/s Ethernet speeds using NRZ modulation for 10/25G and PAM4 modulation for 50/100G. This flexibility allows deployment in diverse network environments from legacy 10GbE to modern 100GbE infrastructure without requiring different hardware.

What hardware acceleration features are included?

The adapter includes NVIDIA ASAP2 (Accelerated Switching and Packet Processing) for line-rate packet processing, GPUDirect Storage for optimized data movement between GPUs and storage, and in-line hardware acceleration for TLS/IPsec/MACsec encryption/decryption, reducing CPU overhead and improving security performance.

Is this adapter compatible with PCIe Gen 3.0 systems?

Yes. The ConnectX-5 Ex EN is backward compatible with PCIe Gen 3.0 (1.1 and 2.0 compatible) through x16 edge connectors. It supports auto-negotiation to x16, x8, x4, x2, or x1 link rates, allowing deployment in both legacy and modern server platforms.

What form factor and physical dimensions does this card have?

The adapter uses a tall bracket form factor with dimensions of 2.71 inches × 5.6 inches (68.90mm × 142.24mm). This standard height allows installation in most enterprise server chassis without requiring low-profile or half-height modifications.

What is the IC part number and compliance status?

The adapter uses NVIDIA IC part number MT28808A0-FCCF-EV and is RoHS compliant, meeting environmental and hazardous substance restrictions for enterprise procurement. The device supports MSI/MSI-X interrupt mechanisms for efficient host communication.

900-9X5AD-0056-ST7 - NVIDIA ConnectX-5 Ex EN 100GbE Dual-Port PCIe 4.0 NIC

Name: 900-9X5AD-0056-ST7 - NVIDIA ConnectX-5 Ex EN 100GbE Dual-Port PCIe 4.0 NIC
Brand: NVIDIA
SKU: 900-9X5AD-0056-ST7
Price: 740 USD
Availability: InStock

900-9X5AD-0056-ST7 - NVIDIA ConnectX-5 Ex EN 100GbE Dual-Port PCIe 4.0 NIC | US IT Hardware

Product overview

The NVIDIA ConnectX-5 Ex EN (900-9X5AD-0056-ST7) is a high-performance dual-port 100 Gigabit Ethernet network interface card designed for enterprise data center deployments. This adapter delivers up to 200Gb/s aggregate bandwidth through two QSFP28 ports, utilizing PCIe Gen 4.0 x16 connectivity for maximum host interface performance. The card supports 10/25/40/50/100 Gb/s Ethernet speeds with NRZ and PAM4 modulation technologies, enabling flexible deployment across diverse network architectures. Featuring a tall bracket form factor and RoHS compliance, the ConnectX-5 Ex EN integrates advanced hardware acceleration capabilities including NVIDIA ASAP2 (Accelerated Switching and Packet Processing), GPUDirect Storage, and in-line TLS/IPsec/MACsec encryption/decryption. The adapter is compatible with PCIe Gen 3.0/4.0 (1.1 and 2.0 compatible) through x16 edge connectors with auto-negotiation support for x16, x8, x4, x2, or x1 link rates. Ideal for cloud infrastructure, hyperscale deployments, and enterprise networking requiring low-latency, high-throughput connectivity with integrated security acceleration.

Dual 100GbE ports deliver 200Gb/s aggregate bandwidth.
PCIe Gen 4.0 x16 interface supports 256Gb/s bus bandwidth.
QSFP28 connectors enable flexible 10/25/40/50/100 Gb/s speeds.
Hardware-accelerated encryption/decryption reduces CPU overhead.
RoHS compliant with tall bracket form factor for standard servers.
Auto-negotiation supports PCIe x16/x8/x4/x2/x1 link rates.

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-ST7
Brand	NVIDIA
Condition	New
Model Name	ConnectX-5 Ex EN
NVIDIA SKU	900-9X5AD-0056-ST7
Product Line	ConnectX-5 Ethernet Adapter Cards
Product Type	Dual-port 100GbE Ethernet Network Interface Card (NIC)
UEFI Support	UEFI Enabled (x86/Arm)
IC Part Number	MT28808A0-FCCF-EV
RoHS Compliance	RoHS Compliant
Multi-Host Support	NVIDIA Multi-Host (up to 8 hosts via SR-IOV)

Compatible systems

The ConnectX-5 Ex EN is compatible with enterprise servers from Dell, HPE, Lenovo, and Cisco supporting PCIe Gen 3.0/4.0 x16 slots. Supported operating systems include Linux (RHEL, Ubuntu), Windows Server, VMware ESXi, and KVM/QEMU with appropriate NVIDIA drivers. QSFP28 optical or DAC cables required for network connectivity; no additional power connectors needed.

Dell PowerEdge
Model: R640, R650, R660, R750, R760
Form factor: PCIe x16 slot
Generation: 14G-16G
Compatible with PCIe Gen 3.0/4.0 slots; tall bracket fits standard server chassis.
HPE ProLiant
Model: DL360 Gen10/Gen11, DL380 Gen10/Gen11, DL560 Gen10/Gen11
Form factor: PCIe x16 slot
Generation: 10G-11G
Compatible with PCIe Gen 3.0/4.0 slots; tall bracket supported.
Lenovo ThinkSystem
Model: SR650, SR660, SR750, SR760
Form factor: PCIe x16 slot
Generation: 2nd-3rd Gen
Compatible with PCIe Gen 3.0/4.0 slots; standard tall bracket installation.
Cisco UCS
Model: C240 M5/M6, C480 M5/M6
Form factor: PCIe x16 mezzanine slot
Generation: M5-M6
Requires appropriate mezzanine adapter; verify slot compatibility with UCS firmware.

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Backward Compatibility	Compatible with PCIe Gen 2.0, 3.0, and 4.0 slots; auto-negotiates to available bandwidth

Marketing Part Number (MPN)	MCX516A-CDAT

Hardware Acceleration Features	NVIDIA ASAP2 (Accelerated Switching and Packet Processing), GPUDirect Storage, in-line TLS/IPsec/MACsec encryption/decryption

Network & Communication

Timing Compliance	Meets G.8273.2 Class C standard for timing accuracy
Supported Protocols	Ethernet, RoCE (RDMA over Converged Ethernet), InfiniBand (EDR via dual-mode variants)
Modulation Technology	NRZ (10/25G), PAM4 (50/100G)
Synchronization Features	PTP hardware clock (PHC) in UTC format, 12 nanosecond accuracy, line-rate hardware timestamp, SyncE, G.8262.1 (eEEC) compliance
Supported Ethernet Speeds	10/25/40/50/100 Gb/s
Maximum Aggregate Bandwidth	200 Gb/s (2x 100Gb/s ports)

Encryption/Decryption Support	TLS, IPsec, MACsec (hardware-accelerated, in-line)

Typical Power Consumption	Powered from PCIe slot; no additional 6-pin or 8-pin power connectors required

Physical Characteristics

Form Factor	PCIe full-height, half-length (FHHL) card with tall bracket
ESD Protection	Special circuits to protect from ESD shocks during cable insertion
LED Indicators	One bi-color (yellow/green) I/O LED per port for link status indication
Physical Dimensions	2.71 in. × 5.6 in. (68.90 mm × 142.24 mm)

Cooling	Passive cooling; operates within standard server thermal envelopes

Interface/Ports

Network Ports	2x 100 Gigabit QSFP28
Connector Type	PCIe Gen 3.0/4.0 x16 edge connector (1.1 and 2.0 compatible)
Host Interface	PCIe Gen 4.0 x16 (backward compatible with Gen 3.0)
PCIe Bus Bandwidth	256 Gb/s (16 lanes × 16GT/s)
Interrupt Mechanisms	MSI/MSI-X
Network Connector Type	QSFP28 (Quad Small Form-factor Pluggable 28)
PCIe Link Rate Support	2.5, 5.0, 8.0, 16.0 GT/s with auto-negotiation to x16/x8/x4/x2/x1

NVIDIA ConnectX-5 Ex EN 100GbE Dual-Port PCIe 4.0 NIC