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Those who work in data center, switch maintenance, and GPU cluster deployment are often confused by two types of cables: DAC Passive Copper Cable and ACC Active Copper Cable. They look almost identical, have completely interchangeable interfaces, and are both high-speed copper cables, leading many to choose based on intuition alone, resulting in: 1)Excessive signal attenuation and packet loss due ...
In 2026, the global optical fiber market experienced a new round of price fluctuations, with some optical fiber products reaching near seven-year highs. This phenomenon is the result of multiple factors, including tight supply of optical fiber preforms (preforms), long expansion cycles for optical fiber production capacity, and the explosive growth of emerging applications such as AI computing pow...
This artical hardware matching guide introduces 2930F JL254A switch hardware specs, supported SFP+/SFP transceivers, DAC cable restrictions, fiber‑cable requirements, common compatibility pitfalls and ETU‑LINK replacement‑SKU reference for enterprise network engineers and system integrators deploying access‑layer networks. In order to be more widely compatible with more branded devices, ETU-Link h...
Single-mode (SM) fiber and multimode (MM) fiber are the two most commonly used transmission media in fiber optic communication, data centers, and enterprise networks. Choosing the right fiber type directly affects transmission speed, distance, stability, and cost. This article will explain their definitions, differences, and applications in detail. What Is Multimode (MM) Fiber? MM fiber is a fiber...
In data center and building cabling, safety is critical. Many users ask: What are OFNP, OFNR, LSZH? What do these flame‑retardant grades mean? Which one should I use for plenum, riser, or indoor areas? The flame retardant grades of optical cables can be divided into three types, OFN, OFNR and OFNP. This article explains definitions, standards, performance, and applications to help you choose...
In this blog, ETU-LINK will introduce the fire rating standards of copper cables. The flame retardant grades of copper cables are divided into four grades: CMX, CM, CMR, and CMP. The minimum is CMX. The insulation layer of the CMP cable is made of FEP material, and the outer sheath is made of PVC. FEP has strong fire resistance and can endure temperatures as high as 800°C or more before it ...
Many network installers and project engineers ask: What is fiber media converter used for? How to wire media converter correctly? Does media converter have to be used in pairs? What matters need attention during installation? This article introduces working principle, classification, step-by-step wiring steps and practical precautions of media converter. Optical fiber media converter is also known...
NAS storage network is a solution to meet the low-cost storage needs of small and medium-sized enterprises. Among them, NAS storage refers to network-attached storage, which is a device for storing data. It takes data as the center, completely separates storage devices and servers, and centrally manages data, thereby freeing up bandwidth, improving performance, reducing total cost of ownership, an...
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