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Product certifications are as important for cabling as for any other industry. No one wants to run the risk of winding up with sub-par products that do not work or, worse, cause damage to other devices (or people). With so many different certifications spread across just as many different industries, it can be hard to keep them straight. For cables, there are a few key certifications to keep an eye out for:

• UL-Listed
• ETL-Listed
• RoHS
• WEEE
• REACH
• Prop 65

Each of these certifications has different definitions covered below. Some or even all of them may not apply to an item depending on what kind of item is in question. For example, certifications for an ethernet cable will not be the same as ones for a patch panel. Other certifications will only apply in certain geographical areas, such as stipulations set in Europe versus ones in the North America. Keep in mind that just because a product does not list a specific certification does not make it “bad”.

UL-Listed

UL-Listed is a certification set by Underwriters Laboratories. They are a federally approved safety testing organization, overseen by OSHA. Underwriters Laboratories has developed and

So, you need a new power cord. Maybe the old cord for your TV got lost when you were moving, or that new computer did not have a power cord in the box when you opened it. For whatever the reason, you need something to make that power button light up when you push it.

There are different types of power cords out there so step one will be determining which kind you will need. But even after you narrow that down, there are still other factors to take into consideration. The first cord you find may be able to do the job, but it is important to make sure the job is done right.

Length

The length of a cord is the first and foremost factor to take into consideration. Naturally, you want to make sure you have a cord that is long enough. Grab your measuring tape and start by finding the power port on your computer, TV, or other device. Measure from that spot to the wall outlet you plan on using. For good measure, add an extra 3 to 6 inches to give the cable a little slack.

Ideally, you want a cable that is just long enough. There should be some slack to reduce strain on the cable and in case you need to move your device further away later. Now you may be asking, “Why not just get a cord that is more than long enough? That way I can move it wherever I want later.” Simply put, long cables are tri

SAINT LOUIS, Missouri, Mar. 4, 2019 – ShowMeCables, an Infinite Electronics brand and leading supplier of connectivity solutions, is proud to announce their new line of power cords. Consisting of over 300 different types of NEMA, IEC, international, hospital grade and angled cords, this new line ensures that ShowMeCables will continue to serve the power demands for IT, Data Center and OEM markets. Readily available power cords include lengths from 1-25 feet, multiple colors, plug orientations, and wire gauges.

ShowMeCables’ manufacturing process emphasizes quality and reliability. Each cable is tested and conforms to the most stringent industry tests and certifications- RoHS, UL, WEEE, REACH and ISO 9001.

This project was made possible thanks to the diligence and dedication of leading Product Manager Andrew Johnston. Spearheading this initiative from the very beginning, Johnston was happy to announce the final result of his endeavors, “Our continuously growing line of readily available premium power cords are a great solution for everyone, from a home user that needs a single replacement cord to high-end data centers needing to power hundreds of critical pieces of hardware.”

Power cords offered at ShowMeCables are ready to ship today with no minimum order quantity. The website’s easy-to-use layout includes features to narrow the list by connector type, AWG, length, color, and more. Full details on ShowMeCables power cords can be seen here: https://www.showmecables.com/by-category/cables/power

Ethernet cables are used to connect everything with an Internet connection today. Even wireless devices like tablets and smartphones have to connect to other devices like routers that are themselves run off ethernet. While the world wide web did not start booming until the late 90s, ethernet’s origins can be traced back to the 1970s.

Robert Metcalfe, the engineer who laid the groundwork for the Internet by co-inventing ethernet.

1974: Xerox PARC finishes developing the first ethernet cable, pioneered by Robert Metcalfe.

1975: Xerox files a patent for the ethernet cable. Metcalfe is listed as the inventor along with his colleagues David Boggs, Chuck Thacker, and Butler Lampson.

1976: The first ethernet system is privately deployed. Upgrades to the system eventually result in 10 Mbit/s ethernet, the first cable released to the public market later on.

1976: Metcalfe and Boggs publish the paper “

Setting up a network sounds easy. Just run some ethernet cable, plug it into your computers and other equipment, and everything is good to go. However, that is a bit of an oversimplification. Under ideal conditions, things really would be that simple. But conditions do not start out ideal and how close they are to the mark largely depends on the prep work.

The best way to prevent any problems is to avoid them entirely. Knowing which mistakes are the most common during the planning phase is the best way to dodge them during implementation.

Poor Cable Management

Most people have probably laid eyes on a jumbled, tangled mess of wires at one point or another. Messes like this can lead to a host of problems down the road. Most obviously, tangled cables are hard to work with and annoying. If anything ever needs to be moved or replaced, the task becomes much more tediously. Additionally, cables twisted together can go past their maximum bend radius, damaging or even outright breaking cables in the long run. Keeping cables organized and labeled with a little extra work now can save you from a lot of extra work later.

These good practices also extend to removing old, unused cables. It is not uncommon for old equipment to be removed while

The term splitter gets thrown around pretty often when it comes to cables. The average splitter works by taking an input signal and dividing it into multiple output signals. For example, on a two-way splitter each output will have half the normal strength since the signal is divided by two. However, this is not how ethernet signals work.

Simply put, ethernet signals cannot be divided the way audio/video signals can. There are devices called ethernet splitters, but they work differently from other kinds of signal splitters. However, a different device called a network switch can be used with ethernet cables for the same effect.

Ethernet Splitters

Ethernet splitters allow users to run one cable instead of two through walls, floors, and ceilings. But in the rooms your equipment is in, users will still need two cables. To facilitate this, ethernet splitters must be used in pairs.

For example, say you have an Internet router in Room A and need to connect hard lines to a computer plus a printer in Room B. But each room only has one ethernet jack in the wall. You would take two cables coming out of the router and connect both to your first ethernet splitter. The other side of the splitter will connect to the wall jack in Room A. Then you do the same thing in Room B, connecting the computer and printer to the other splitter and then hooking that to the other wall jack.

The ability to just click a button and connect to WiFi on almost any modern device is hard to pass up. On the other hand, ethernet is still around after years of WiFi so surely it has its advantages. The truth is that both options have ups and downs. Your priorities as a user will be the ultimate deciding factor for determining which is better.

Wired Connections - Ethernet

Ethernet is older and better tested than WiFi, maintaining a number of benefits. Physical connections are faster and provide greater reliability, control, and security.

• A signal with a cable to guide it will always be faster than the wireless equivalent, making tasks like file sharing quicker.
• Ethernet signals are much less prone to becoming unstable and/or dropping.
• It is easier to control who is connected to a network, ensuring a network will not be bogged down by too many users.
• Wired networks cannot be seen by anyone with a wireless device, making hacking much harder.

Being older may make ethernet more of a tamed animal, but its age does show with a few disadvantages.

• All machines must be physically connected to the same wired network to communicate.
• Connections will be limited by the length of the cables being used.
• Cables tangle and can be tricky to manage.
• Some devices (cell phones, tablets, etc.) do not have ethernet ports as an

Patch panels are simple pieces of equipment designed to house a large number of jacks. Typically, they are mounted onto rack or cabinets. The panels themselves are easy to install, but there are a few details to know before getting started.

Horizontally, patch panels are 19 inches (the industry standard size). Vertically, patch panels are measured in rack units (RU). Patch panels are rectangular and secured with four screws, one on each corner. A single RU is the amount of space one row of jacks will take up on a unit (1 RU = 1.75 inches). Typically, a maximum of 24 ports can be squeezed onto a single RU.

There are two main types of patch panels, pre-made and keystone.

*If you need help installing a patch panel onto a rack or cabinet, please see the article here.

Pre-Made Patch Panels

Pre-made patch panels are used for ethernet and telephone connections. This type of patch panel is built with the jacks already installed. Ethernet patch panels feature punchdown on the back for wiring directly into the connectors. They even feature charts with wiring schemes on the back to help during installation. Ethernet panels are available for the various types of ethernet (Cat5e, Cat6, etc.).

Telephone patch panels are also called Telco patch panels. From the front, they look very similar to ethernet patch panels. On the back, a port is available to plug in a Telco cable. This allows for a simple, easy install in data closets and similar environments. There are different types of jacks available on these panels with different positions (P) and conductors (C). For example, regular phone lines may need 6P4C while a VOIP phone could need 8P2C. There are more options besides those two, so see what your phones will need to make an appropriate selection.

“Pinout” is a term describing how an electrical cable is wired. Some cables do not have pinouts because they only contain a single internal wire, like coax cables. But if a cable has multiple pins on the end of the cable, it will have a pinout.

Each type of multi-pin cable has a standard pinout or two, but these layouts are not set in stone. Some machines will require non-standard pinouts; this will require users to use a custom cable.

Pinouts also come into play when using a cable with two different ends. For example, going from DB9 (9 pins) to DB25 (25 pins) will mean the DB25 side has 16 unused, “dead” pins.

If you need to know what pinout a cable needs, ideally there will be a spec sheet handy showing it. The next best option is contacting the manufacturer of the equipment the cable will be used with to see if they have a spec sheet available. If you have a cable tester available, that can be used to see how the pins line up. As a last resort, a cable can also be cut open to verify the pinout.

In the guide below, we will be highlighting the standard pinout configuration for common types of multi-pin cables.

Ethernet Pinouts

Ethernet uses two main pinouts, straight and crossover. Straight cables are used to connect computers to other devices, like modems and routers. Crossover cables are used to connect two computers directly. The wires inside ethernet cables are color-coded to industry standards, making it easy to follow the standard pinout options.

Straight pinouts are divided into two different options, T-568A and T-568B. The “B” option is the standard today, although finding the “A” cables still in use in older buildings

Every type of cable has a maximum distance. These distance limits can vary greatly from one type of cable to the next. Along with determining whether a cable will work, distance limits will also determine how well a cable works. Knowing the fundamentals behind cable distance limits is the first step in selecting the best cable for your needs.

Cables will always have some sort of “maximum signal” rating, depending on the type of the cable. For Ethernet cables, it will be the maximum upload/download speed. For HDMI cables, it will be the maximum resolution of the video. And so on and so forth for other cables. Any type of “maximum” rating should be taken with a grain of salt.

Those ratings are the best possible rating the cable is capable of under theoretical, perfect conditions. For example, modern HDMI cables are all rated for 4k. But if the HDMI cable is running through a coupler, users will almost certainly not get 4k. Each time a signal passes through a connection, even just connecting a cable to something like a TV or computer, the signal quality degrades a little. Using devices like extenders and couplers will make the signal weaker; for example, coupling a 10’ cable to a 5’ cable will result in a weaker signal than just using a single 15’ cable. Here is where HDMI baluns can help.

Another key factor for signal quality is the distance of the cable. The further a signal has to travel, the more it will degrade by the time it gets from Point A to Point B.