Do Ethernet couplers slow connection?

If you are in a business or home environment and are using Ethernet cables, you probably use an Ethernet coupler to extend the length of your Ethernet cable to reach a variety of connected devices. But, do Ethernet couplers reduce speed?

You can connect a variety of devices, including modems, routers, computers, laptops, smart TVs, and peripherals like printers using Ethernet cables to allow them internet access. Such cables transmit signals that enable users to transfer data over a wide or local area network.

Often, you will find that your devices are not all in the same room. As a result, you will likely want to extend your Ethernet cable for a few more meters to accommodate these devices that are far from the router. Using an Ethernet coupler, you can join several wires to form a longer cable, making it unnecessary to open or expose the wiring of an Ethernet cable to split it into two.

As long as you are within range and the coupler is in proper working condition, you will not experience any slower connections. According to IEEE standards, an Ethernet cable runs for 100m, meaning a coupler within this range will not alter the cable speed.

What is an Ethernet coupler?

Generally, an Ethernet coupler is a small rectangular enclosure made from metal or plastic open on both ends. Once you place the coupler between two Ethernet cables, its design allows the signal from the wire attached at one end to transfer to the cable connected at the opposite end.

These couplers contain similar color-coded wires as those on Ethernet cables. By correctly inserting the connector of an Ethernet cable with a plastic sheath, the cable makes contact with wires inside the coupler box.

Similarly, the coupler box comes with a notch that complements the flexible tab on the cable’s sheath, allowing users to secure the Ethernet cable and prevent its incorrect insertion. You complete the coupling connection by inserting the second Ethernet cable into the coupler box.

Does an Ethernet coupler reduce speed?

Basically, an Ethernet coupler does not impact the speed of an Ethernet cable. However, factors like the range of connectivity, Electromagnetic Interference (EMI), and the build quality of the coupler may affect your connection speed.

One of the vital factors to consider when buying an Ethernet coupler is the prevalence of EMI in the installation environment. If such an environment has air conditioners, microwaves, printers, fluorescent lights, or generators, there is a likelihood of crosstalk between circuits caused by EMI, leading to decreased data transfer speed, increased errors, and low-quality data.  As a result, experts recommend such users to consider buying high-quality shielded Ethernet couplers.

What is the difference between shielded and unshielded couplers?

Despite the ability of unshielded couplers to reduce EMI to a specific rate, shielded couplers are more effective in blocking such interference. For instance, the shielded options of Cat5 and Cat6 cables contain a thin foil that efficiently blocks EMI.

As a result, shielded Ethernet couplers are perfect for high-speed networks as they are more sensitive to EMI; thus, aiding in ensuring high-speed performance and data integrity. These couplers also come with a drain wire that offers grounding, which cancels the effects of EMI. However, you also have to use shielded jacks and cables to enjoy the maximum benefit of shielded couplers.

Some people prefer using unshielded couplers since they are cheaper and easier to install. Likewise, shielded cables are less flexible and have a larger diameter, meaning they take up more space. Unshielded couplers promote a faster data transfer rate when not affected by EMI and other obstructions. More so, it has been the standard for many years, meaning it is already in existence in many environments.

Does the type of Ethernet cable affect the type of coupler used?

Another crucial factor to consider when buying an Ethernet coupler is the type of Ethernet cable you are using.  Some popular Ethernet cables available on the market include Cat6, Cat6a, Cat5e, and Cat5. A significant difference between these cables is their data transmission rate. You can easily find the specification details of these cables printed on the exterior protective sheath.

Ideally, when connecting Ethernet cables, you should match the Ethernet couplers to its cable types. Manufacturers and retailers have recommended couplers that match the classifications of Cat6 and Cat5 Ethernet cables. Connecting couplers and cables with different specifications can result in signal failure between the connected device and the network card or significant data transmission signal loss.

Similarly, each cable class, as well as any Ethernet coupler used, has a preferred maximum length. For instance, Cat6 cables have a maximum cable length of 100 meters (328 feet) in normal conditions, but the distance drops to 55 meters (180 feet) in mixed network wiring configurations. You should purchase Ethernet couplers within similar specifications.

Conclusion

Regardless of whether you choose to use shielded or unshielded Ethernet couplers, ensure that you use those with a superior build quality. The more superior the quality of couplers and cables used, the more reliable and durable the connection will be; hence, drastically reducing long-term labor and repair costs.

Frequently Asked Questions

Can a Cat5 coupler work with a Cat6 cable?

Yes, most couplers come in standard sizes but spot a different coating on their pins. However, you will get more speed by using a Cat6 compatible jack coupler.

Why is there a limit on the length of Ethernet cables?

It is common for electrical signals to degrade over long distances, especially when using super-thin wires as those found in Ethernet cables.