Name: QSFP-SR4 Arista 40G 850nm QSFP+ Short-Range Transceiver up to 100m
Brand: Arista Networks
SKU: QSFP-SR4
Price: 51.00 USD
Availability: InStock
Rating: 4.8 (119 reviews)

Product Overview
The Arista QSFP-SR4 40G SR optic enables short-range 40 Gigabit Ethernet links using 850nm lasers over multimode fiber. It fits into QSFP+ ports and is typically used in data center and enterprise network environments where high bandwidth and low latency are needed over distances up to 100 meters.

General Information
Brand	Arista Networks
Part Number	QSFP-SR4

Technical Information
Form Factor	QSFP+
Media	MMF
Type	VCSEL
Power Consumption	Typical 1.0 W, Max 1.5 W
Protocols	40GBASE-SR4, IEEE 802.3ba (40G)
Connector	MTP/MPO
DOM Support	Yes

Physical Characteristics
Weight	5.00
Condition	Refurbished

Product Description
This Arista QSFP-SR4 is a high-speed optical transceiver designed for short-range 40G Ethernet connections. It uses an 850nm VCSEL laser to efficiently transmit data over multimode fiber, making it suitable for data center environments and high-performance networking setups. Often found in switches and servers where rapid data transfer is essential, this transceiver helps maintain low latency and high bandwidth. Network engineers and IT professionals rely on it for reliable interconnects within racks or across adjacent racks. Key Features Delivers 40Gbps data rate with four parallel lanes Compatible with OM3 and OM4 multimode fiber cables Supports link lengths up to 100 meters on OM4 fiber Low power consumption for efficient operation Hot-pluggable for easy network upgrades This QSFP-SR4 module is commonly deployed in data centers, enterprise networks, and high-speed computing clusters. It plays a key role in connecting switches and servers, offering a balance of speed and reach without requiring complex cabling solutions.

Use Cases
The Arista QSFP-SR4 40G transceiver is primarily deployed in high-density data center environments where short-range, high-speed connectivity is essential. Network architects and IT professionals managing enterprise networks or cloud infrastructure benefit from its ability to facilitate rapid data transfer within rack and row-level distances. How It's Used: Connecting top-of-rack switches to aggregation switches in hyperscale data centers supporting virtualization workloads. Interlinking storage area network (SAN) nodes within enterprise data centers requiring low-latency access. Enabling high-throughput uplinks between servers and spine switches in cloud service provider environments. Supporting edge computing clusters that demand rapid data exchange over short multimode fiber runs. Facilitating high-bandwidth connections in campus LAN core switches to optimize internal data flow. This transceiver enhances network scalability and operational efficiency by providing reliable 40G connectivity optimized for short distances, allowing organizations to maintain high performance across their data center fabric without over-provisioning fiber infrastructure.

QSFP-SR4 Arista 40G 850nm QSFP+ Short-Range Transceiver up to 100m

Product Overview

General Information

Technical Information

Physical Characteristics

Product Description

Use Cases