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Wifi Guide

What Is Wifi Cable Called? Definition and Everyday Uses Explained

Introduction If you have ever found yourself standing in an electronics store or browsing an online marketplace asking, “What Is Wifi Cable Called?”, you are certainly not alone. Millions of people use the phrase “wifi cable” every day, yet the answer is more

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Introduction

If you have ever found yourself standing in an electronics store or browsing an online marketplace asking, “What Is Wifi Cable Called?”, you are certainly not alone. Millions of people use the phrase “wifi cable” every day, yet the answer is more nuanced than a single name. In everyday conversation, “wifi cable” usually refers to the physical cord that connects a router, modem, or computer to a network, but technically speaking, Wi-Fi itself is a wireless technology and does not use a cable at all. The cable people are usually thinking of is most commonly known as an Ethernet cable, though it goes by several other names depending on the context, the region, and the specific use case.

This guide explains exactly what a “wifi cable” is called, why so many names exist, the different types available, and how to choose and use the right one for your home or office. By the end, you will never be confused by networking terminology again.

Table of Contents

The Short Answer: What Is Wifi Cable Called?

If you want a single, practical answer to the question “What Is Wifi Cable Called?”, the most accurate everyday term is Ethernet cable. It is also widely called a LAN cable, a network cable, an RJ45 cable, or a patch cable. All of these names describe essentially the same thing: a copper cable with eight internal wires terminated in an RJ45 connector, used to connect devices to a local area network or to the internet.

So while people often say “wifi cable” when they mean the cord that brings internet to their router or computer, the technically correct and most universally understood name is Ethernet cable.

Why “Wifi Cable” Is a Misnomer

Wi-Fi is, by definition, a wireless networking standard. The term itself is a trademarked brand name created by the Wi-Fi Alliance, and it refers to wireless local area networking based on the IEEE 802.11 family of standards. Because Wi-Fi transmits data over radio waves, there is no such thing as a “Wi-Fi cable” in the strict technical sense.

However, language evolves. Many people use “wifi cable” to describe any cable involved in getting internet service into their home or device. This includes:

  • The coaxial cable that runs from the wall to a cable modem
  • The fiber optic cable that connects a fiber terminal to a router
  • The Ethernet cable that links a modem to a router or a router to a computer
  • The telephone line (DSL) that connects to a modem

Because the phrase is ambiguous, it is helpful to learn the precise names so you can buy the right product and troubleshoot problems faster.

The Official Name: Ethernet Cable

Ethernet is the most widely used wired networking technology in the world. It was standardized in the early 1980s and has evolved through several generations, from the original 10 Mbps speeds to modern 10 Gbps and beyond. An Ethernet cable contains four twisted pairs of copper wire (eight wires total) and uses an RJ45 connector on each end.

When someone asks “What Is Wifi Cable Called?”, Ethernet cable is the answer you will hear from network engineers, IT professionals, and most retailers. It is the term used on product packaging, in technical documentation, and in operating system settings.

A Brief History of Ethernet

Ethernet was originally developed at Xerox PARC in the 1970s. The first versions used thick coaxial cable, but modern Ethernet relies on twisted-pair copper cables (the familiar thin cables with plastic connectors) or fiber optic cables. The IEEE 802.3 standard governs Ethernet, and it continues to evolve to support higher speeds and longer distances.

The RJ45 Connector Explained

The plastic clip-on connector at the end of an Ethernet cable is called an RJ45 (Registered Jack 45). It has eight gold-plated pins that mate with corresponding contacts inside a network port. The connector is easy to plug in and remove, and it locks in place with a small plastic tab. This is why many people also call Ethernet cables “RJ45 cables.”

Other Common Names for the Wifi Cable

Depending on where you live and who you are talking to, the same cable may be called by several different names. Understanding these synonyms helps you shop and troubleshoot with confidence.

LAN Cable

LAN stands for Local Area Network. A LAN cable is simply an Ethernet cable used within a home, office, or building. In many countries, especially in Asia and Europe, “LAN cable” is the most common term used by consumers.

Network Cable

This is a generic, catch-all term. It can refer to Ethernet cables, but it may also describe coaxial, fiber, or telephone cables. When buying online, “network cable” is often used as a broad category name.

Patch Cable

A patch cable is a short Ethernet cable used to connect devices within a rack or patch panel. The term comes from the practice of “patching” connections together. Patch cables are usually flexible and shorter than 10 meters.

Cat5, Cat5e, Cat6, Cat7, Cat8

These are not brand names but category ratings. “Cat” stands for Category. The number indicates the cable’s performance level, including speed and bandwidth. For example, Cat5e supports up to 1 Gbps, while Cat6 supports up to 10 Gbps over shorter distances.

Coaxial Cable (Coax)

Sometimes when people say “wifi cable,” they actually mean the coaxial cable that delivers cable internet or TV service to their home. Coaxial cables have a single copper core surrounded by insulation, shielding, and an outer jacket. They use F-type connectors, not RJ45.

Fiber Optic Cable

In fiber-to-the-home (FTTH) installations, the “wifi cable” may be a fiber optic cable that carries light signals instead of electrical signals. These are glass or plastic fibers and require special connectors and equipment.

Types of Ethernet Cables Compared

Not all Ethernet cables are created equal. The table below compares the most common categories so you can pick the right one for your needs.

Category Max Speed Max Distance Bandwidth Best For
Cat5 100 Mbps 100 m 100 MHz Legacy networks
Cat5e 1 Gbps 100 m 100 MHz Home internet, basic offices
Cat6 10 Gbps (short runs) 55 m at 10 Gbps 250 MHz Gaming, streaming, modern homes
Cat6a 10 Gbps 100 m 500 MHz Commercial installations
Cat7 10 Gbps 100 m 600 MHz Data centers, shielded environments
Cat8 25/40 Gbps 30 m 2000 MHz High-performance data centers

For most households, Cat5e or Cat6 is more than sufficient. Cat6a and above are typically reserved for professional or high-demand environments.

Everyday Uses of Ethernet Cables

Even in a world dominated by Wi-Fi, Ethernet cables remain essential. Here are the most common everyday uses.

  • Connecting a modem to a router: This is the most common use. A short Ethernet cable links the modem’s LAN port to the router’s WAN port.
  • Connecting a router to a computer: For desktop PCs, gaming consoles, and smart TVs, a wired connection provides lower latency and more stable speeds than Wi-Fi.
  • Extending Wi-Fi coverage: Ethernet cables can connect a main router to a secondary access point or mesh node in another room.
  • Power over Ethernet (PoE): Some Ethernet cables carry both data and electrical power, used for IP cameras, VoIP phones, and wireless access points.
  • Home automation and IoT hubs: Smart home controllers often require a wired connection for reliability.
  • Office networking: Printers, servers, and workstations frequently use Ethernet for dependable performance.

How to Choose the Right Cable

Follow these steps to select the best Ethernet cable for your situation.

  1. Identify your internet speed: Check your plan. If you have 1 Gbps or less, Cat5e is fine. For multi-gigabit plans, choose Cat6 or Cat6a.
  2. Measure the distance: Keep runs under 100 meters for standard categories. For longer runs, consider fiber or a network switch.
  3. Consider the environment: For outdoor or in-wall installations, choose cables with appropriate jackets (CMR for riser, CMP for plenum, outdoor-rated for exterior).
  4. Decide on shielding: Unshielded (UTP) is fine for home use. Shielded (STP) helps in electrically noisy environments.
  5. Check connector quality: Look for gold-plated contacts and snagless boots to protect the locking tab.
  6. Buy from reputable brands: Avoid no-name cables that may not meet category specifications.

How to Make Your Own Ethernet Cable

Making your own cable can save money and let you create custom lengths. Here is a simplified step-by-step process.

  1. Gather tools: You will need bulk Ethernet cable, RJ45 connectors, a crimping tool, and a cable stripper or scissors.
  2. Strip the jacket: Remove about 2.5 cm (1 inch) of the outer jacket to expose the eight wires.
  3. Untwist and arrange wires: Follow the T568B wiring standard (most common): white-orange, orange, white-green, blue, white-blue, green, white-brown, brown.
  4. Trim wires evenly: Cut all eight wires to the same length, about 1.25 cm (0.5 inch) from the jacket.
  5. Insert into connector: Push the wires into the RJ45 connector, ensuring each wire reaches the front and the jacket enters the connector for strain relief.
  6. Crimp: Place the connector in the crimping tool and squeeze firmly.
  7. Test: Use a cable tester to verify all eight pins are connected correctly.

If you are not comfortable with this process, pre-made cables are inexpensive and reliable.

Wired vs Wireless: When to Use a Cable

Wi-Fi is convenient, but wired Ethernet still wins in several scenarios. Use a cable when you need:

  • The lowest possible latency (gaming, video calls, trading)
  • Maximum throughput for large file transfers or 4K/8K streaming
  • Reliable connections in areas with heavy wireless interference
  • Security-sensitive environments where wireless eavesdropping is a concern
  • Devices that do not have Wi-Fi (some desktops, printers, smart TVs)

Use Wi-Fi when mobility, convenience, and avoiding cable clutter matter more than absolute performance.

Tips and Best Practices

  • Always buy cables slightly longer than you think you need to allow for routing and future changes.
  • Avoid running Ethernet cables parallel to power cables to reduce electromagnetic interference.
  • Label both ends of long cable runs for easier troubleshooting.
  • Use cable management (clips, raceways, or ties) to keep installations tidy and safe.
  • Replace old Cat5 cables with at least Cat5e or Cat6 when upgrading your internet plan.
  • Keep connectors clean and avoid bending cables sharply, which can damage internal wires.
  • For in-wall installations, use CMR or CMP rated cables to meet fire safety codes.

Common Mistakes to Avoid

  • Buying a cable that is too short and having to daisy-chain with couplers, which degrades signal.
  • Assuming all “Ethernet” cables support the same speed; always check the category rating.
  • Using outdoor cables indoors or vice versa, which can violate building codes.
  • Forcing connectors into ports, which can break the locking tab or damage the port.
  • Ignoring the difference between straight-through and crossover cables (mostly obsolete with Auto-MDIX, but still relevant for very old equipment).
  • Buying counterfeit or non-certified cables that fail to meet performance claims.

Frequently Asked Questions

What Is Wifi Cable Called in simple terms?

In simple terms, the “wifi cable” most people refer to is an Ethernet cable. It is the cord with the plastic clip connector that plugs into your router, modem, or computer.

Is a LAN cable the same as an Ethernet cable?

Yes. LAN cable is just another name for an Ethernet cable, especially when it is used inside a home or office network.

Can I use any Ethernet cable for internet?

Almost any Ethernet cable will work for basic internet, but the speed and distance you can achieve depend on the category. For best results, match the cable category to your internet plan and device capabilities.

Does a better cable make Wi-Fi faster?

A better cable will not make your Wi-Fi faster, but it can make your wired connection faster and more stable. If your router is connected to the modem with a poor-quality cable, your overall network performance may suffer.

What is the difference between a coaxial cable and an Ethernet cable?

A coaxial cable is used by cable TV and cable internet providers to bring service to your home. An Ethernet cable is used within your home to connect devices to the router or modem. They have different connectors and serve different purposes.

How long can an Ethernet cable be?

Standard Ethernet cables (Cat5e, Cat6, etc.) support runs up to 100 meters (328 feet). Beyond that, you may need a network switch, fiber optic cable, or other signal extension methods.

Do I need a special cable for gigabit internet?

For gigabit internet, at least Cat5e is recommended. Cat6 or Cat6a is even better, especially for future-proofing or multi-gigabit plans.

Conclusion

So, what is wifi cable called? While the phrase “wifi cable” is commonly used in everyday speech, the most accurate and widely recognized name is Ethernet cable. Depending on the context, you may also hear it called a LAN cable, network cable, RJ45 cable, patch cable, or by its category rating such as Cat5e or Cat6. Understanding these names—and the differences between cable types—empowers you to buy the right product, set up your network correctly, and troubleshoot issues with confidence.

Whether you are connecting a new router, wiring a gaming console, or planning a full home network, choosing the right cable makes a real difference in speed, reliability, and longevity. Now that you know exactly what a “wifi cable” is called and how to use it, you are well equipped to make informed decisions about your home or office network.