What an Ethernet connection is and why you might use one
An Ethernet connection means plugging a cable directly from your device into your router or modem. It is the oldest and most reliable way to connect to the internet — older than Wi-Fi, and still faster and more stable for most home uses. The cable itself is thin, about the width of a phone charger, with a plastic connector on each end that looks like a chunky phone jack.
Most people use Wi-Fi because it is wireless and convenient. But Ethernet is worth knowing about because it does not drop the signal, does not slow down when you move to another room, and does not compete with your phone or smart TV for bandwidth. If your internet keeps cutting out, or if you are doing something that needs a rock-solid connection — video calls for work, online gaming, uploading large files — Ethernet often solves the problem when ready.
Key Takeaways
- An Ethernet cable plugs directly into your router or modem and into your device, creating a wired internet connection that is faster and more stable than Wi-Fi.
- Most laptops, desktop computers, and some tablets have an Ethernet port; phones and newer thin laptops often do not, and will need an adapter.
- The cable itself is inexpensive and comes in different lengths; longer cables work just as well as short ones, so run it wherever you need it to go.
- Connecting is automatic — plug in the cable and your device will recognize the internet within seconds, with no passwords or settings to enter.
What devices have an Ethernet port and what to do if yours does not
Desktop computers almost always have an Ethernet port built in. Most laptops do too, though newer thin models — especially MacBook Air and similar ultrabooks — have removed it to save space. Tablets rarely have one. Phones never do. If your device does not have a port, you can buy an adapter that plugs into your charging port and adds an Ethernet connection; these cost between $15 and $40 depending on the brand and what type of charging port your device uses.
To find out whether your device has an Ethernet port, look at the sides and back. The port is a rectangular slot about half an inch wide, usually on the back or side of a laptop, or on the back of a desktop tower. If you are not sure, search online for your device model plus "Ethernet port" — you will find photos showing exactly where it is, or confirmation that your model does not have one.
How to physically connect the cable
Buy an Ethernet cable long enough to reach from your router to where your device will sit. Cables come in lengths from 3 feet to 100 feet; they all work the same way, so pick the length that fits your space. The cable is not directional — either end plugs into either device.
Plug one end into the Ethernet port on your router or modem. This is usually on the back, and there are often several ports labeled something like "Ethernet" or "LAN" (Local Area Network). Any of them will work. Push the cable in until you hear a small click. Then plug the other end into your device the same way. Within a few seconds, your device will recognize the connection and you will be online. You will usually see a small icon on your screen showing a wired connection, or the Wi-Fi icon will change to show a cable.
Why Ethernet is faster and more reliable than Wi-Fi
Wi-Fi travels through the air, which means it can be blocked by walls, metal, or other devices using the same frequency. Ethernet is a physical cable, so nothing can interfere with it. The signal does not weaken based on distance from the router — a 50-foot cable works as well as a 5-foot one. Your speed and connection quality stay exactly the same no matter where you are in your home or what else is happening on your network.
In real terms: if your Wi-Fi read speed is 100 megabits per second but drops to 40 when you are in another room, Ethernet will give you the full 100 consistently. If your video calls keep freezing on Wi-Fi, switching to Ethernet usually fixes it when ready because the connection is not competing with your phone, smart TV, or smart home devices for airtime.
When to use Ethernet instead of Wi-Fi
Use Ethernet whenever you need the connection to be rock-solid: during important video calls, online gaming, uploading or downloading large files, or streaming video to a TV. If your Wi-Fi is unreliable in a particular room, run an Ethernet cable there instead of troubleshooting the Wi-Fi. If you work from home and your internet keeps dropping, Ethernet will almost certainly solve it.
You do not need Ethernet for everyday browsing, email, or social media — Wi-Fi is fine for those. But if you are frustrated with your internet, Ethernet is the first thing to try before calling your internet provider or buying a new router. It costs $10 to $20 for a cable and takes 30 seconds to plug in.
How to switch between Ethernet and Wi-Fi
Most devices automatically use Ethernet when it is plugged in and switch back to Wi-Fi when you unplug it. You do not have to do anything. If your device is not automatically switching, you can manually choose the connection in your settings. On Windows, go to Settings > Network & Internet and look for Ethernet in the list of available connections. On Mac, go to System Preferences > Network. On phones or tablets with an adapter, the connection will show up in your Wi-Fi settings as a wired option.
If you want to use both at the same time — for example, Ethernet for work and Wi-Fi for your phone — that works fine. Your router can handle multiple connections without any problem. Devices connected by Ethernet will not slow down devices using Wi-Fi, and vice versa.
Troubleshooting if the connection does not work
If you plug in the cable and nothing happens, first check that both ends are pushed in firmly and you hear the click. Then restart your device — sometimes it needs a moment to recognize a new connection. If that does not work, unplug the cable from your router, wait 10 seconds, and plug it back in.
If the cable is plugged in but your device still shows no internet, the problem is usually with the router or modem, not the cable. Try plugging the cable into a different port on the router. If you have another device you can test with, plug the cable into that device to see if it works — if it does, the problem is with your first device's Ethernet port or settings. If it does not work on any device, the cable itself may be damaged, and you can buy a replacement for $10 to $15.
Frequently Asked Questions
Is Ethernet faster than Wi-Fi?
Ethernet is usually faster and always more stable. The actual speed depends on your internet plan and router, not the cable. But Ethernet delivers that speed consistently, while Wi-Fi often slows down based on distance, walls, and other devices. If your Wi-Fi is 100 megabits per second, Ethernet will usually deliver the full 100 every time.
Can I use a really long Ethernet cable?
Yes. Cables up to 100 meters (about 330 feet) work fine for home use. Longer cables do not slow down your speed or weaken the signal. Buy whatever length you need to reach from your router to your device without creating a tripping hazard.
Do I need a special cable for gaming or video calls?
No. All Ethernet cables work the same way. A $10 basic cable is just as good as a $50 "gaming" cable. The difference is in the connector quality and durability, not in speed or reliability. A standard cable will work perfectly for any home use.
What if my device does not have an Ethernet port?
You can buy an adapter that plugs into your charging port and adds an Ethernet connection. These cost $15 to $40 and work well for laptops, tablets, and phones. Search online for your device model plus "Ethernet adapter" to find the right one.
Will using Ethernet slow down my Wi-Fi?
No. Devices connected by Ethernet and devices using Wi-Fi do not interfere with each other. You can have some devices on Ethernet and others on Wi-Fi at the same time with no problem.