博文

目前显示的是 十一月, 2017的博文

Common Power Cord Types: C13, C15, C19 and NEMA 5-15P

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Electricity is one of the things that we rely on most in modern life and work, which is even more fundamental than the Internet. It has been utilized to serve human beings for centuries, and the technologies and standards in this filed have been developed and improved for better usage globally. The computer power cord C13 is a typical example of the achievements through power cord standardization. Do you know why use the letter C and the number 13 to name it? This post will explain the standards that power connectors comply to and the most commonly used power cord types. International Power Cord Types: C13, C15 and C19 C13 power cord is specified by the power cord standard IEC 60320, which is recognized as an international standard by most countries in the world. The standard determines the electrical, mechanical, thermal requirements and safety operations of the specified power cord type . It also describes the shape, size and dimensions of the appliance to be connected to wit

Comparison of 48-Port PoE Switch Price and Functionality

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When it comes to connecting a lot of VoIP phones and IP cameras, a 48-port PoE switch is great for powering them. Whether it is for home use or business use, a 48-port PoE switch can best solve the problems of installing these PoE network devices in places that has no power lines. Due to the high capacity and power supply feature, a 48-port PoE switch price is often higher than a standard 48-port Ethernet switch with no PoE. In this post, we will introduce some cheap 48-port PoE switches and do a comparison between them. Comparison of Four 48-Port PoE Switches Prices and Functions The four 48-port PoE switches that we’re going to discuss are UniFi US-48-500W, TP-Link T1600G-52PS, D-Link DGS-1210-52MP/ME and FS S1600-48T4S . They are inexpensive compared with most enterprise class 48-port PoE switches. Let’s have a look at these switches. Difference Between the Four 48-Port PoE Switches The table below gives some basic parameters of these four switches, including the

Affordable 10G SFP+ Switches for SMB Hyper-Converged Appliance Expansion

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Hyper-converged infrastructure (HCI) has been earning a good reputation in data centers, whether it is of the entire branch offices, the IT duties of small and medium businesses (SMBs) or the virtual desktop infrastructure deployments. HCI offers numerous integrated services such as backup, data protection and solid-state drive storage, and allows seamless management and expansion of various compute, storage and network devices, i.e., users can scale the network flexibly by adding a new appliance to the hyper-converged cluster. For SMBs, the requirements for network switches is not the same as large enterprises when adding a 10G appliance. This post is to suggest some affordable 10G SFP+ switches for SMBs during hyper-converged appliance (HCA) expansion. 10G SFP+ Switches Requirements for SMB HCA Expansion In today’s SMBs, applications are requiring higher data rate and some management features. For a SMB with a considerable size, the core switches might be requir

How to Buy Right 48 Port 10GBASE-T Switch?

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For recent years, the advent of 10Gbase-t copper solutions has seen growing adoption. Compared to fiber optics, copper has made great advances in latency and power consumption. 10Gbase-t is thus becoming more popular in network switches and servers. If you have not got any 10G switches, you should get 10Gbase-t switches, such as 12 port, 24 port, or 48 port 10gbase-t switches which are cost-effective 10g sfp+ copper switches for data centers. This post mainly talks about 48 port 10gbase-t switch. Why You Need 48 Port 10gbase-t Switch? Like other BASE-T technologies, 10gbase-t uses the standard RJ45 Ethernet jack. 10gbase-t is backward compatible, auto-negotiating between higher and lower speeds, thereby not forcing an all-at-once network equipment upgrade. It means that the 10G copper connections can also work with 1 Gigabit Ethernet devices without requiring any expensive hardware replacements. The ability to autonegotiate between 1 and 10 gigabit speeds allows 10gbase-t server u