Name: 49Y7891 IBM 40GbE QSFP+ to QSFP+ 3m Direct Attach Copper Cable
Brand: IBM
SKU: 49Y7891
Price: 97.60 USD
Availability: InStock
Rating: 4.8 (119 reviews)

Product Overview
The IBM 49Y7891 3M 40Gb QSFP+ to QSFP+ direct attach cable offers a straightforward way to connect compatible hardware at 40Gbps speeds over short distances. It fits well within data centers needing efficient, low-latency connections without the need for transceivers or optics.

General Information
Brand	IBM
Part Number	49Y7891
Alternate Part Number	49Y7891-01-CT

Technical Information
Data Rate	40 Gbps
Cable Length	3 m
Compatibility	IBM QSFP+ ports, Cisco QSFP+ ports, Mellanox QSFP+ adapters, Brocade QSFP+ switches, Broadcom-based QSFP+ ports
Stacking Bandwidth	40 Gbps
Product Category	Cables & Adapters, Cables, Network Direct Attach Cables

Connectivity
Connector Type	QSFP+ to QSFP+

Physical Characteristics
Form Factor	QSFP+
Weight	5.00
Condition	Refurbished

Product Description
This 3-meter QSFP+ to QSFP+ direct attach cable provides a high-speed 40Gbps connection ideal for linking network devices directly. Often found in data centers and server rooms, it handles high bandwidth requirements between switches, routers, or storage systems. Built for network administrators and IT professionals managing dense server environments, this cable helps maintain fast, stable links with minimal signal loss. It’s commonly used to shorten distances without sacrificing performance in top-of-rack or end-of-row setups. Key Features Ensures reliable 40Gbps data transfer with minimal interference Compact 3-meter length for efficient cable management Supports hot-plugging for easy installation and replacement Compatible with IBM hardware and other QSFP+ interfaces Energy-saving design reduces power consumption This cable is typically deployed within data centers to connect critical hardware directly, reducing latency compared to optical alternatives. Its dependable performance helps maintain seamless network operations, especially where short-range, high-speed links are essential.

Use Cases
The IBM 49Y7891 40GbE QSFP+ to QSFP+ 3m direct attach copper cable is primarily utilized in data center environments where high-speed, low-latency connections are crucial. It benefits network architects and system administrators managing dense rack deployments that require reliable short-range interconnects between switches, servers, and storage systems. How It's Used: Connecting top-of-rack switches to aggregation switches in enterprise data centers for scalable 40GbE networking. Linking high-performance compute nodes within virtualization clusters to support workload consolidation. Establishing direct connections between storage area network (SAN) fabrics and compute resources in storage clusters. Facilitating rapid data transfers in edge computing setups where space and power efficiency are limited. Supporting inter-rack communications in hyperscale environments requiring dense cabling solutions. This cable enables streamlined cabling infrastructure with minimal latency and power consumption, enhancing operational efficiency in environments that demand scalable and high-throughput connectivity. Its straightforward deployment aids in maintaining consistent network performance across critical IT workloads.

49Y7891 IBM 40GbE QSFP+ to QSFP+ 3m Direct Attach Copper Cable

Product Overview

General Information

Technical Information

Connectivity

Physical Characteristics

Product Description

Use Cases