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10Gtek's SFP+Copper Twinax cables are suitable for very short distances and offer a highly cost-effective way to connect within racks and across adjacent racks. SFP+ cables offers a low cost SFP+ solution. SFP+ directly attached twinax cable assemblies supports 10 Gigabit Ethernet, 10 Fibre Channel, and other industry standards.This cable is available at lengths from 0.5m to 12m.

https://www.sfpcables.com/j9283a-b

SFPcables.com is 10GTEK TRANSCEIVERS CO., LTD' s On-Line Mall site to sell HPC Cable: SFP Cables, SFP+ Cables, QSFP Cables, MiniSAS Cables, XFP Cables and Fiber Optic Transceivers: SFP, SFP+, X2, XFP, XENPAK, GBIC, CWDM / DWDM, BIDI, etc.

Watch the World Cup HD video with 10Gtek's digital video transceiver.

Online shopping. w/24h-delivery, 7Days & Refund Guarantee. CE, RoHS and ISO9001 Certified. SFP+ Cables, QSFP+ Cables, MiniSAS Cables, XFP Cables, CX4 Cables and Fiber Optic Transceivers.

Optical transceivers are widely used in network connection devices such as switches, NICs (network interface cards) and media converters, which make them necessary in fiber optic connections.

sfpcables Weekly Discount New

10Gtek QSA Module, QSFP+ to SFP+/QSFP28 to SFP28 Adapter

Original Price: $159 Now low to $50!

HDMI AOC, Hybrid Copper Optical Cable, 10-meter, Support HDMI 2.0 and HDCP 2.2, HDMI 4K 60Hz

Original Price: $199 Now low to: $99

56Gb/s QSFP+ FDR DAC Cable, 2-Meter

Original Price: $93.6 Now low to: $47

40GBASE QSFP+ AOC Cable, 1.5-Meter (MMF)

Original Price: $599 Now low to: $84

10/100/1000M Gigabit Ethernet Media Converter, RJ45 to SFP Slot

Original Price: $22.9 Now low to: $19

CXP 100GBASE Active Optical Cable, 20-Meter (OM3, MMF)

Original Price: $880 Now low to: $199

CAT5E RJ-45 UTP Connectors, RJ-45 Modular Plugs with flexible latch, 100-Pack

Original Price: $8 Now low to: $5.56

For Juniper QFX-SFP-DAC-1M

Original Price：$1599 Now low to: $999

#fiberoptic #cisco #sfptransceiver #network #10gbase

Fast Ethernet 100Base FX SFP ★Online Sale ★Free Shipping ★In Stock ★Qucik delivery in 2 days ★3-Year Warranty ★Compatible with: Cisco, HP, Juniper, Extreme, Allied Telesis, Foundry, Force10, Alcatel-Lucent...and more...GLC-FE-100FX | 100Base FX

Full Line QSFP+ Solution | QSFP+ SR4 | 40Gb/s-56Gb/s ★Online Sale ★Free Shipping ★Qucik delivery in 2 days

10Gtek's AMQ10-SR4-M1 Module This is a parallel 40Gb/s Quad Small Form-factor Pluggable (QSFP+) optical module, terminated with MPO multifiber connectors. They are compliant with the QSFP+ MSA and IEEE 802.3ba 40GBASE-SR4 and compatible with IEEE 802.3ba 10GBASE-SR. Digital diagnostics functions are available via an I2C interface, as specified by the QSFP+ MSA. The transceiver is RoHS-6 compliant and lead-free per Directive 2011/65/EU. 10Gtek's QSFP-40G-SR4 Module supports link lengths of 100m and 150m respectively on laser-optimized OM3 and OM4 multimode fiber cables. It primarily enables high-bandwidth 40G optical links over ribbon fiber cables terminated with multi-fiber connectors, and could also be used along with ribbon to duplex fiber breakout cables for connectivity to four 10GBASE-SR optical interfaces.

10GTEK offers full line of QSFP+ Transceivers(QSFP+ SR4, QSFP+ LR4 etc) for Cisco, Juniper, Brocade, Intel, HP, IBM, Dell...Direct shopping online Promotion

40G QSFP+ Transceivers

10Gtek internal code here！【10GTEKGO】❗

http://www.10gtek.com/

What Is a Patch Cable?

A patch cable is a general term for cabling that connects two electronic devices to each other, typically in a network. These devices might include computers and other hardware. Patch cables are also used to carry telephone, audio, and video signals between devices in non-networked applications; these might include equipment such as headphones and microphones.

Patch cables are also called patch leads. The term "patch cord" is sometimes used as well, but it's often associated more with non-network types of cables such as those for wiring stereo components.

Patch cables are different from other types in that they're made to be more flexible than standard stiff, bulky copper cables. Patch cables always have connectors at both ends.

Types of Patch Cables and Their Uses

There are many different kinds of patch cables. The most common are CAT5/CAT5e ethernet cables linking a computer to a nearby network hub, switch, or router, a switch to a router, etc.

Ethernet patch cables are useful to those building home computer networks. Travelers staying in older hotels without wi-fi sometimes need patch cables to create hard-wired internet connections.

A crossover cable is a specific type of Ethernet patch cable used to connect two computers to each other.

Non-networking patch cables might include headphone extension cables, microphone cables, RCA connectors, XLR connectors, TRS phone connector cables, Tiny Telephone (TT) connectors, patch panel cables, etc. They also can be thick "snake cables" that transmit video and amplified signals.

What Does a Patch Cable Look Like?

Patch cables can be any color and are usually shorter than other kinds of networking cables because they're meant for "patching" devices together. Typically, that's accomplished over a short distance, so most are no longer than two meters. In fact, they can even be as short as just a few inches. Longer cables are usually thicker than their short counterparts, and often are shielded to prevent electromagnetic interference.

A patch cable is normally made of coaxial cabling, but it also could consist of fiber optic, shielded or unshielded CAT5/5e/6/6A, or single-conductor wires.

A patch cable always has connectors on both ends, which means it's not as permanent of a solution as some cables like pigtails or blunt patch cords. These are similar to patch cables but have exposed bare wires on one end that are meant to be connected directly and permanently to a terminal or other device.

10Gtek internal code here！【10GTEKGO】❗ http://www.10gtek.com/

Here is SFPCABLES!

SFPcables.com is an official online store of 10Gtek company. It offers one-stop Datacenter solution and products, including compatible Transceivers, DAC cables, AOC cables, Fiber Optical, Patch-cord, CWDM/DWDM passive/active systems, Network Adapters and more. As a commitment to offering high-quality, reliable and customized products, SFPcables.com develops and tests new products to meet the growing Data Centers and High Performance Computing market needs.

When the optics is react ray then the optical is which colour?

What is fiber optics?

We're used to the idea of information traveling in different ways. When we speak into a landline telephone, a wire cable carries the sounds from our voice into a socket in the wall, where another cable takes it to the local telephone exchange. Cellphones work a different way: they send and receive information using invisible radio waves—a technology called wireless because it uses no cables. Fiber optics works a third way. It sends information coded in a beam of light down a glass or plastic pipe. It was originally developed for endoscopes in the 1950s to help doctors see inside the human body without having to cut it open first. In the 1960s, engineers found a way of using the same technology to transmit telephone calls at the speed of light (normally that's 186,000 miles or 300,000 km per second in a vacuum, but slows to about two thirds this speed in a fiber-optic cable).

In the 10Gtek compatibility lab, we are going to test the compatibility of 10Gtek modules on various original brand switches and devices. 10Gtek has been off...

5 Rules for a More Accurate Internet Speed Test

Most of us are familiar with those popular internet speed test services out there. You've probably seen some of these sites before, like Speedtest.net, Speakeasy, etc.

What these sites do is let you test your upload and download bandwidth, giving you some idea about the quality of your connection to the internet... but how accurate are they, really?

Sadly, they're often not at all accurate. Sometimes, an internet speed test isn't accurate because the method the service uses isn't great, but often times it's because you haven't done things on your end to make sure the numbers aren't skewed.

Below are the 5 things you should do to make sure the test of your internet speed is as accurate as possible:

Important: Please read through our How to Test Your Internet Speed tutorial if you haven't already. Internet speed test sites are often great but aren't always the best way to test your bandwidth.

Always Restart Your Modem & Router

Yes, I know, restarting is the standard first step advice for just about every tech problem out there, but it's also a great proactive step to take as well, especially with routers and high-speed digital modems.

The modem and router that work together to give your computers and other devices access to the internet is, itself, a tiny computer. A tiny computer with several really big jobs, like properly navigating all sorts of traffic around your connected home.

Just like your computer or smartphone, various things keep it from working quite as well over time. With modems and routers, those issues sometimes manifest as sluggish web browsing and movie-streaming.

Since we're after a really accurate internet speed test, and restarting your modem and router often helps return them both to full working status, doing just that makes a lot of sense.

See How to Properly Restart a Router & Modem for the right way to do this. (Yes, there is a wrong way!)

Don't Use the Internet for Anything Else

While you probably already thought of this one, it's maybe the most important rule to remember when testing your internet speed: don't use the internet while you're testing it!

Obviously, this means that you shouldn't have a dozen other windows open on your computer, but be sure to check on other things that you might take for granted that use the internet a lot.

A few things that come to mind include streaming music services that run in the background, patches downloading via Windows Update, Netflix streaming on a TV in another room, etc.

Don't forget mobile devices, too. Most smartphones auto-connect to your wireless network when they're within range, so turning on airplane mode is probably a smart idea during your test... assuming you're not testing from your phone, of course.

If you're not sure if something might be using the internet, turning it off is a safe bet during your test.

Always Restart Your Computer or Device Before Testing

I know... here I go again with the restarting stuff, but restarting really does help out a lot.

Yes, just like with the router and modem, restarting the computer (or tablet, smartphone, etc.) that you're testing your internet from is a very easy thing to do that might have a real impact on the accuracy of your internet test.

See How to Restart a Windows Computer if you're one of those power-button-off folks (yeah... don't do that).

It might seem strange to restart your device when what you're testing is the internet connection, but parts of the test rely on your hardware to work properly.

Don't Forget to Clear Your Browser's Cache

On that note, another smart thing to do prior to testing your internet speed is to clear your browser's cache. You should do this before each subsequent test, assuming you plan on testing several times in a row.

Most internet speed tests work by downloading and uploading one or more files of specific sizes and then using the time those files take to do that to calculate your internet speed.

If you're testing several times in a row, test results after the initial test may be impacted by the fact that those files already exist on your computer (i.e. they're cached). A good internet speed test should compensate for that but you'd be surprised how often we see issues because they don't.

See How Do I Clear My Browser's Cache? if you're not sure how to do that in whatever browser you're using to test from.

Note: While probably obvious, you can skip this step if you're using an app to test internet speed or are using some other non-browser method.

Choose an HTML5 Internet Speed Test Instead

Last, but certainly not least, we highly recommend that you test your bandwidth with an HTML5 based test, not a Flash based one.

SpeedOf.Me, Speedtest.net, TestMy.net, and Bandwidth Place are all HTML5 based internet speed tests that we've looked closely at and are happy to recommend.

It's estimated that Flash-based tests, like those from the very popular Speakeasy, as well as most ISP-hosted tests, have to make adjustments, by as much as 40%, to compensate for the fact that their tests use Flash!

See HTML5 vs Flash Internet Speed Tests: Which Is Better? for a lot more on this topic.

Remember That No Speed Test Is Perfect

Minimizing the "noise" during an internet speed test, which is what the several tips above help you do, certainly contributes to a more accurate speed test result.

Keep in mind, however, that all you're testing with an internet speed test is how well your current connection works between your computer or device and the testing server itself.

While this is great for a general idea of how fast (or slow) your internet connection is, it doesn't necessarily mean that this is the bandwidth you should always expect between you and anywhere else.

Why are street lamps on the whole night through? Shouldn't it have motion sensors to turn on 3-4 lamp lights in front of the 1st vehicle & then dim the rest to save power?

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