Name: CX456B Dell Dual-Port 100Gb QSFP Low Profile Network Adapter PCIe Gen3 x16
Brand: Dell
SKU: CX456B
Price: 412.85 USD
Availability: InStock
Rating: 4.8 (119 reviews)

Product Overview
The CX456B Mellanox Dual-Port 100Gb QSFP Low Profile Network Adapter Card provides dual 100Gb ports designed for high-throughput server environments. It fits into low profile slots, making it suitable for dense server configurations, and supports PCIe Gen3 x16 connectivity to ensure fast, stable data exchanges. This card is a solid option for data centers and HPC setups needing reliable, speedy network access without extra bulk.

General Information
Brand	Dell
Part Number	CX456B

Connectivity & Physical
Dimensions	Approx. 64.8 x 167.7 x 20.3 mm (H x W x D) — low-profile PCIe adapter (approximate, vendor-specific tolerances may apply)
Weight	3.00
Condition	Refurbished

Miscellaneous
Eco Friendly	Yes
Compliance Standards	WEEE, RoHS, cURus, CE, FCC, CCC, UL, TUV, cULus, CSA, cUL

Product Description
The CX456B Mellanox network adapter delivers dual 100Gb QSFP ports, enabling rapid data throughput for demanding environments. It's commonly used in data centers and enterprise servers where bandwidth and low latency are critical. Built for IT professionals managing high-performance computing or large-scale virtualization, this card offers reliable and efficient network connectivity. It’s often found in setups aiming to maximize data flow without sacrificing server space. Key Features Provides two 100Gb QSFP ports for flexible connectivity options Low profile form factor ensures compatibility with tight server chassis PCIe Gen3 x16 interface delivers robust data transfer rates Designed to reduce network bottlenecks in heavy traffic environments Supports advanced network protocols suitable for modern data centers Typically deployed in enterprise data centers or cloud infrastructures, the CX456B helps maintain smooth network operations. Its compact design makes it a practical choice where space is at a premium, yet high-speed networking is essential.

Use Cases
The CX456B Dell Dual-Port 100Gb QSFP Low Profile Network Adapter is tailored for environments demanding exceptional throughput and minimal latency. It is especially suitable for data centers and high-performance computing infrastructures where space constraints require low-profile hardware without compromising connectivity speed. How It's Used: Integrating into dense rack-mounted servers within hyperscale data centers to facilitate rapid inter-server communication. Enhancing virtualized computing clusters by providing consistent, high-bandwidth network access to multiple VMs. Supporting storage area networks (SANs) that require low latency and high throughput for fast data retrieval and backup operations. Deploying in edge computing nodes where compact hardware and efficient data transfer are critical. Facilitating high-frequency trading systems that rely on ultra-low latency network connections in financial data centers. By delivering dual 100Gb ports within a low-profile form factor, this adapter enables scalable network architectures while optimizing server density. Its PCIe Gen3 x16 interface ensures robust and stable connectivity, making it a practical solution for IT environments where performance and space efficiency are equally prioritized.

CX456B Dell Dual-Port 100Gb QSFP Low Profile Network Adapter PCIe Gen3 x16

Product Overview

General Information

Connectivity & Physical

Miscellaneous

Product Description

Use Cases