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What is a Wi-Fi Router?

What is a Wi-Fi Router?

Whether you're powering through an online battlefield on Xbox Live or chatting with a friend over Skype, your Wi-Fi router is the gatekeeper to your wireless connection. It takes the wired Internet connection coming from your modem and transforms it into a wireless signal.

Is Your Router Out of Date?


Most households have wireless routers that are a few years old. With each passing year, more connected devices join the network, putting more stress on that outdated router. It’s important to know what to look for in a router, because like most people, you’re probably due for an upgrade. In fact, you should replace your router every two years to stay current with advances in Wi-Fi technology.


Single, Dual, and Tri-Band Wi-Fi Routers 

Wi-Fi travels through your router on radio bands that act like invisible highways. Each band is a different lane, keeping data on separate routes to avoid congestion. Because certain devices demand more bandwidth than others, your router’s efficiency depends on the number of bands it has—single, dual, or tri-band. A three lane highway (or tri-band router) has one 2.4 GHz and two 5 GHz channels to support more simultaneous users—a huge plus for families, who average eight devices per household and have high bandwidth activities.

How you use your Wi-Fi also helps determine what router best suits you. For instance, a tri-band router is a great choice if you're a movie streaming buff with a number of TVs, you have a gamer in the house, or you work at home and want your own dedicated band. On the flip side, if you’re a light Internet user who primarily emails or browses Facebook, a dual-band router will work just fine.

Understanding Wi-Fi Standards: Wireless-N to Next-Gen AC

Routers lead the pack when it comes to deploying the latest Wi-Fi standards, and their client devices (your phone or tablet, for example) typically start incorporating the new technology six to twelve months later. For this reason, it’s best to future proof your home network with the most current Wi-Fi standard to make sure it can support the hottest products when they hit the market.

In 1999, Linksys pioneered Wi-Fi technology with the release of the WRT54G router, but since then, Wi-Fi standards have undergone a complex evolution:

Timeline of Wi-Fi standards

  • In 2012, Wi-Fi significantly improved with the emergence of the 802.11ac standard, which packed almost triple the speed of its predecessor, 802.11n.
  • The latest standard is MU-MIMO (Next-Gen AC), which stands for multi-user multiple input and multiple output. That’s a mouthful, but what does it mean? This update to the 802.11ac standard improves the way Wi-Fi interacts with multiple devices at once. Whereas single user (or SU-MIMO) routers serve data in a serial fashion to one device at a time, MU-MIMO routers serve data to multiple devices at once.

    diagram comparing Max-Stream MU-MIMO and Tradtional Routers
  • For example, let's say you’re chatting on FaceTime while your children stream a movie on Netflix. With a SU-MIMO 802.11ac router, your devices have to wait in line while the router shoots data at them one at a time, leaving the other without signal. It may only be for a millisecond, but that moment without connection creates lag (what we know as buffering). With MU-MIMO, your router transmits data to both devices at the same time, creating a seamless experience—and happier kids. 

Features to Consider When Shopping for a New Router

Router Speed:

Today's high-performing devices demand speed, and plenty of it. Without sufficient speeds, your HD movies won’t have crisp resolution, and your games will pause due to buffering. Thankfully, Wi-Fi routers have become much faster in recent years:


  • Routers using the 802.11n standard released in 2007 transmit about 450 megabits per second (Mbps).
  • With the introduction of 802.11ac in 2012, Wi-Fi was sped up considerably, running as fast as 1300 Mbps on the 5GHz band.
  • In 2015, Wi-Fi was accelerated once again with the MU-MIMO standard. These models can reach speeds up to 1.7 Gbps, or about 1700 Mbps.
  • Consider the number of people who will be simultaneously using your network when deciding what speed is best for you, as well as the type of activity that is common in your household. If you’ve got a house full of Netflix addicts and online gamers, MU-MIMO is definitely the way to go.

When comparing routers, you'll see that some models have antennas protruding from the case, while others do not. Routers with internal antennas look more elegant on a bookcase or table, but those with external antennas can give you stronger signals. If you have multiple antennas, you can adjust them to better deliver coverage to each floor of your home, from the basement to the upstairs bedrooms.

Network Management Apps:

Some routers come equipped with mobile app compatibility, allowing you to remotely check in on your network settings. From your smartphone or tablet, you can prioritize Wi-Fi between devices, monitor your speeds, restrict sensitive content from the kids, or access home security cameras while you're at work.

QoS (or Media Prioritization):

Quality of Service is a feature found in advanced routers that gives you the ability to prioritize certain kinds of traffic. For example, you can set the QoS option in the router's admin panel to give priority to online games or video streaming. This means that if someone downloads a file while you're playing an online game, your game won’t lag because it’s been assigned first priority.


Beamforming is another advanced option on modern routers that can significantly improve signal strength and speed. Beamforming (or spatial filtering) gives the router the ability to focus the signal toward specific devices in your home instead of blanketing the entire home with the same signal strength.

Ethernet Ports:

Wi-Fi routers aren't limited to wireless connections. Sometimes, you want to be certain that you are getting the absolutely fastest speeds from your Internet service provider, like when you’re playing in a competitive online gaming tournament. To do that, simply plug your device directly into the router using an Ethernet port and cable. Older routers with Fast Ethernet support speeds up to 100 Mbps, but modern routers support Gigabit Ethernet, which is ten times faster at 1000 Mbps.


When it comes to transferring large amounts of data, the need for speed often surpasses even Ethernet’s capabilities. Transferring a terabyte of backup files from an external drive, for example, can take more than two and a half hours at 1000 Mbps. Routers that support eSATA hard drives give you the option to connect your external storage device directly to the router, making backups accessible to everyone in your home at speeds up to 6 Gbps—much faster than using USB 2.0 or Firewire. 

Placing Your Wi-Fi Router

To ensure your devices are getting the most out of those Wi-Fi signals, place your router in a central, elevated position, like a desktop or a shelf. Avoid thick concrete walls, metal objects, and HVAC equipment wherever possible, and keep the space clutter-free—large objects and other electronics inhibit the router's range. If you have a large home where devices stray far from the router, consider adding a range extender  to amplify your signal.

If you still aren't getting the speeds you’re looking for, your Internet package may be the culprit. There's no point investing in upgraded home networking equipment like routers and modems if your broadband speed isn't up to par.

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