• April 21. 2026

When customers inquire about "400G optical module requirements," are you also confused about the differences between QSFP-DD, OSFP, and QSFP112? Different packages differ significantly in channel count, heat dissipation, power consumption, and application scenarios. Choosing the wrong package can affect project schedule and cost! Below is a simplified comparison table and key conclusions to help y...

• April 14. 2026

In an increasingly competitive market, comprehensive after-sales service is an indispensable part of sales work. It aims to ensure customers receive timely and professional support during the use of optical modules. ETU-LINK provides the following customer support: I. After-Sales Technical Support 1. 24/7 Service: Providing 7x24-hour technical consultation and fault reporting services, ensuring cu...

• October 27. 2023

What is a Media converter? Do you understand its applications and features? Today, ETULINK will take you to understand what a Media converter is. Media converter is a communication device that converts short-distance Ethernet electrical signals and long-distance optical signals into each other, ensuring smooth transmission of data packets between two networks. It has two ports, one end is an optic...

• May 26. 2023

Media converter are Ethernet transmission conversion units that convert electrical signals and optical signals to each other, so they are also called photoelectric converters. The main purpose of using Media converter is to extend the transmission distance of the signal. Since the twisted pair wires used in our daily life, that is, network cables, have a very limited transmission distance, if...

• November 26. 2021

Optical module identification and status monitoring are essential daily tasks for network engineers maintaining Cisco switching systems. This guide provides complete, step-by-step CLI commands to view module type, DOM/DDM diagnostic data, vendor details, and compatibility information, fully compliant with Cisco IOS and IOS-XE command standards. Prerequisites for Accessing the Cisco Switch We will ...

• November 17. 2021

Optical fiber media converter is also known as optical-to-electrical converter, its function as converting the optical and electrical signal. The transmission process is roughly: the electrical signals are converted into optical signals, transmitted through optical fibers, and then the optical signals are converted into electrical signals at the other end, and then connected to routers, switches a...

• August 26. 2021

Nowadays, video surveillance systems have become one of the indispensable infrastructures in all walks of life. With the popularization of high-definition and intelligent applications of video surveillance cameras, the requirements for video transmission signal quality, stream bandwidth and transmission distance have been improved. ETU-LINK will introduce to you today the use of PoE media converte...

• August 05. 2021

What Is a Server and How Does It Connect to a Switch? Server-switch interconnection and campus network deployment are core networking scenarios in enterprise, education, and data center communication. This article provides complete solutions for server-switch connection, high-speed optical interconnection, and reliable campus network construction with standard-compliant components and best practic...