Name: QSFP-40G-XSR4 Arista 40GBASE-XSR4 40Gbps QSFP+ 850nm 300m/400m
Brand: Arista Networks
SKU: QSFP-40G-XSR4
Price: 63.00 USD
Availability: InStock
Rating: 4.8 (119 reviews)

Product Overview
The QSFP-40G-XSR4 from Arista is a 40GBASE-XSR4 transceiver designed for short-range multimode fiber connections. It fits into QSFP+ ports to provide 40 Gigabit Ethernet links typically used in data center fabrics and high-speed network backbones. This module supports up to 400 meters on OM4 fiber, making it a practical choice for connecting switches and servers within large facilities.

General Information
Brand	Arista Networks
Part Number	QSFP-40G-XSR4

Technical Information
Form Factor	QSFP+
Power Consumption	Typical 1.5 W, Max 2.5 W
Protocols	40GBASE-XSR4, IEEE 802.3ba

Physical Characteristics
Weight	5.00
Condition	Refurbished

Product Description
The Arista QSFP-40G-XSR4 transceiver enables 40 Gigabit Ethernet connections over multimode fiber. It's commonly used in data centers and high-performance computing environments where high-speed, short to medium reach connectivity is required. Network engineers and IT professionals often deploy this module to upgrade existing infrastructure or expand capacity without major rewiring. Key Features Delivers 40Gbps data transfer rates with low latency Compatible with OM3 and OM4 multimode fibers for flexible deployment Utilizes 850nm VCSEL lasers for efficient signal transmission Hot-pluggable design simplifies installation and maintenance Meets IEEE 802.3ba standards for reliable interoperability This transceiver is often found in aggregation switches and core networking equipment, particularly in environments that demand fast, reliable data transport over moderate distances. It helps maintain network performance while leveraging existing fiber cabling.

Use Cases
The QSFP-40G-XSR4 transceiver is commonly deployed in data centers and enterprise network environments requiring high-speed, short-range connectivity over multimode fiber. It is ideal for IT teams managing dense rack deployments and high-throughput server connections where low latency and reliable 40Gbps links are essential. How It's Used: Connecting top-of-rack switches to aggregation layers in large-scale data centers using OM4 fiber. Linking storage clusters that demand high bandwidth and low latency within virtualization environments. Facilitating inter-switch connectivity in campus networks requiring scalable 40 Gigabit Ethernet links. Supporting high-performance computing clusters with short-reach multimode fiber connections. Enabling edge data center deployments where compact, energy-efficient high-speed transceivers are necessary. This transceiver supports scalable network architectures by providing reliable 40Gbps links over multimode fiber, which helps maintain performance and flexibility in dense and dynamic networking environments. Its compatibility with standard QSFP+ ports ensures seamless integration with existing network infrastructure, aiding operational efficiency.

QSFP-40G-XSR4 Arista 40GBASE-XSR4 40Gbps QSFP+ 850nm 300m/400m

Product Overview

General Information

Technical Information

Physical Characteristics

Product Description

Use Cases