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From the brand
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Founded in 1996, TP-Link is a global provider of reliable networking devices and accessories, involved in all aspects of everyday life.
With a proven heritage of stability, performance, and value, TP-Link has curated a portfolio of products that meet the networking needs of all individuals.
Now, as the connected lifestyle continues to evolve, the company is expanding today to exceed the demands of tomorrow.
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WiFi 7
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USB to Ethernet Adapters
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Compare with similar items
This Item  TP-Link AX1800 WiFi 6 Router (Archer AX21) – Dual Band Wireless Internet Router, Gigabit Router, Easy Mesh, Works with Alexa - A Certified for Humans Device |  |  |  |  |  | |
| Price | -25% $74.99 List: $99.99 | -32% $88.60 List: $129.99 | -13% $129.99 List: $149.99 | -15% $169.99 List: $199.99 | -9% $49.50 Typical price: $54.50 | -13% $199.99 List: $229.99 |
| Delivery | Get it as soon as Wednesday, May 15 | Get it as soon as Wednesday, May 15 | Get it as soon as Wednesday, May 15 | Get it as soon as Wednesday, May 15 | Get it as soon as Wednesday, May 15 | Get it as soon as Wednesday, May 15 |
| Customer Ratings | ||||||
| WiFi signal | ||||||
| User interface | ||||||
| Tech Support | ||||||
| Value for money | ||||||
| Sold By | Amazon.com | Amazon.com | Amazon.com | Amazon.com | i-Tech Mall | Amazon.com |
| connectivity tech | Wi-Fi, Ethernet | Wi-Fi | Wi-Fi, Ethernet, USB | Wi-Fi, Ethernet, USB | Wi-Fi | Wi-Fi, Ethernet, USB |
| number of ports | 5 | 5 | 5 | 5 | 4 | 5 |
| data transfer rate | 1200 megabits per second | 2976 megabits per second | 2976 megabits per second | 5378 megabits per second | 1800 megabits per second | 4804 megabits per second |
| wireless standard | 802 11 AX, 802 11 AC, 802 11 N, 802 11 G, 802 11 B | 802 11 AX, 802 11 AC, 802 11 B, 802 11 G, 802 11 N | 802 11 AX, 802 11 AC, 802 11 B, 802 11 G, 802 11 N | 802 11 AX, 802 11 AC, 802 11 N, 802 11 G, 802 11 B | 802 11 AX | 802 11 AX, 802 11 AC, 802 11 N, 802 11 G, 802 11 B |
| frequency band class | dual band | dual band | dual band | dual band | dual band | dual band |
| lan port bandwidth | 10/100/1000 Mbps | 10/100/1000 Mbps | 10/100/1000 Mbps | 10/100/1000 Mbps | — | 10/100/1000 Mbps |
| security protocol | WPA3, WPA/WPA2-Enterprise (802.1x), WPA/WPA2 | WPA3, WPA2-Enterprise, WPA2-PSK | WPA3, WPA2, WPA | WPA3, WPA2, WPA2-Enterprise | — | WPA3, WPA2, WPA/WPA2-Enterprise (802.1x) |
From the manufacturer
Experience the Future of Speed and Performance
Super-fast speeds up to 1.8 Gbps and a powerful CPU mean the ultimate buffer-free 4K/HD streaming and gaming experience even with all your smart home, mobile, and other electronic devices connected to your network. [2]
Connect up to 4X More Devices Without Losing Speed
Archer AX21 communicates data to multiple devices simultaneously with revolutionary OFDMA and MU-MIMO, allowing the whole family to connect more without slowing down. [5]
Easy Setup with Tether App
Whether you prefer the intuitive Tether App or the powerful web interface, you can set up your Archer AX21 in minutes.
Better Coverage
Beamforming and four antennas work together to improve your WiFi and focus signal strength towards your devices for stronger, more reliable coverage.
Advanced WPA3 Security
The latest WiFi security to keep your devices and network safe. [4]
Backward Compatible
Compatible with all WiFi standards, devices, and Internet Service Providers.
TP-Link OneMesh – Create Your Own Mesh WiFi System
OneMesh uses your compatible router and range extender to form a mesh WiFi network. This allows you to roam freely without connecting to a new network or dropping your connection and only requires one name and password to connect.[7][9]
Visit TP-Link’s official website for compatible models.
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Why I'm switching to this Octopus #thisorthat
Brennan ✅
Reviews with images
WOW!! (Part 2)
08/20/22 UPDATESo, it's been roughly 4 months since I unboxed this router, and I thought I'd provide a bit more info on how things are going. I'm on a 1Gbit fiber connection, and the second Speedtest image is above. I'm still getting roughly 930+MB/sec upload AND download speeds, so there's not complaint on that side of this router's performance!I DID, however, take a star off from my original rating of 5 stars. Why? Well, we have more computers, WiFi range extenders, steaming devices and A/V CAT6 wired components than you can shake a stick at, along with four network switches. After filling up ALL the ports on the back of this TP-Link router, that brought it to it's knees and it started crashing, locking up, acting like it was over-heating ... and I ALMOST shipped it off to TP-Link for repair. I unplugged all but 3 of the CAT6 cables from it, and everything went back to normal. And it's VERY repeatable.Don't do what I did. I only have 5 cables plugged into now, and once again it runs like it's on fire! So, there ya go. One star off for NOT letting me fill every network port on the router! Your milage may vary. Mine does NOT.-------------------------------------------------------------------------------------------Wireless routers are one of those things it's hard to get excited about. Let's face it; unless they're out in plane sight, most folks don't even know they exit! They are the hidden workhorse of appliances that do all the hard stuff behind the scenes. Not THIS wireless router though!This one is VERY hard to miss! For one thing, it's gigantic, and if you read the full specs, it weighs a touch over 6 POUNDS!! Who makes routers THAT big and THAT heavy?! Well, apparently TP-LINK does! Over the years I've owned and continue to own too many TP-LINK devices to count (six as of this writing), and their longevity and reliability are second to none. They just WORK and do what they're SUPPOSED to do, right out of the box!What else could you ask for? How about a wireless router that looks like an alien spaceship?! That's what THIS router looks like! And who puts an 8-port network switch in their routers?! Again, that'd be TP-LINK! I've never seen an 8-port switch in ANY router before this one!But, the bottom line is PERFORMANCE! That's where the tires meet the road, and this baby cranks out performance like NO OTHER ROUTER! Check out my Speedtest screenshot, and I think you'll agree. It's the best performance I've EVER seen from a router! Yes, I have Gigabit Fiber, and it's SUPPOSED to be fast! I bought two other routers before this one, and neither of them were anywhere NEAR this level of performance!The built-in user interface is VERY impressive and VERY easy to use! I've been using routers since the 90s and there were a few options I had to Google to find out what they even were! That's a FIRST too! Everything just works the way it's supposed to, and while this router is a bit pricey, you get what you pay for ... and you get a LOT!If you want the best, this is it. And that IS the bottom line!
Top reviews from the United States
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Reviewed in the United States on March 11, 2022
5* review for successfully resolved my low 2.4G speed problem, excellent support from TP Link and fast 5G speed that exceeds Verizon Fios max speed of 300Mbps.
The purpose of this review is to compare the 2.4G and 5G speeds of the TP Link Archer A7(AC1700) WiFi 5 router and AX21(AX1800) WiFi 6 router using an iPhone 11 which supports WiFi 6. The highest speed I can test is 300Mbps limited by my Verizon Internet plan. Measurement results using show that using the WiFi 5 router, the 2.4G speed is 60M/80M (UL/DL) and the 5G speed is 307M/330M, whereas using the WiFi 6 router, the 2.4G speed is 110M/120M and the 5G speed is about same.
Newer routers’ real life 5G speed is very high and normally is not a problem, but real life 2.4G speed could be slow. It is not entirely sure which part of the wireless link is limiting the 2.4G speed. Below examines the speed limit of the WiFi standards involved, the router and iPhone 11. The routers are TP Link’s Archer A7(AC1700) and AX21(AX1800). Measured speeds at 2.4G and 5G will also be given.
Router (TP Link) Specs and Supported WiFi Standards
1) Archer A7(AC1700) has has 3 antennas is a WiFi 5 router
2.4G : 450Mbps
5G: 1300M bps
Supported Standards: AX21(AX1800) : 802.11ac(Wi-Fi 5), 802.11b, 802.11ax(Wi-Fi 6), 802.11n(Wi-Fi 4), 802.11g
802.11n, 802.11ac, 802.11ax are also called Wi-Fi 4, WiFi 5 and WiFi 6 respectively.
2) AX21(AX1800) has 4 antennas is a WiFi 6 router
2.4G: 574M bps
5G: 1200M bps.
Supported Standards: AX7 (AC1700) 802.11b, 802.11n, 802.11g, 802.11ac
A7 (AX1800) is a low cost ($60) popular (listed as “Amazon Choice”) WiFi 5 router which supports 802.11 ac whereas AX 21 is a low cost ($90) WiFi 6 router which supports 802.11 ax. WiFi 6 (max speed 9.6G) not only has higher speed than WiFi 5 (max speed 3.5G) but also can support more devices using orthogonal frequency division multiple access. The main differences are given in picture 1.
(Picture 1 from : https://www.mwrf.com/technologies/systems/article/21849959/whats-the-difference-between-wifi-5-and-wifi-6)
Comparing the specs of these two routers, one has a higher 2.4G speed while the other has a higher 5G speed. But in real life, according to my measurements, at 2.4G, the WiFi 6 router has almost twice the speed than the WiFi 5 router. I don’t have a high enough wireless speed plan to test the 5G speed. In my house both routers have the same speed of 310M, limited by the max speed allowed by Verizon Fios 300M.
Speeds specified by the WiFi standards are speeds the router manufacturers trying to meet and they are not the limit, but speeds advertised by the router are the speeds that customers want the router to be able to reach. They become upset if they are unable to get the speeds advertised by the router.
Routers often do not specified under what link conditions these seemingly advertised high speeds could be realized. For example what is the required bandwidth, the number of antennas (the so called MIMO) and how pure the signal has to be (the signal to noise ratio). Is the bandwidth 20, 40, 80 or 160M? Is the signal to noise ratio has to be greater than 10dB?
In real life, link speed depends on how far from the router (the signal strength) and radio interference which falls in band (the signal to noise ratio). The former can be solved by doing the speed test right next to the router, where the transmit signal from the router is at maximum. But for the latter, unless one has a so called Faraday Cage, there is no way to block in-band interference especially at 2.4G, which are used by microwave ovens, Bluetooth and many household devices. Interference is hard to quantify without using a spectrum analyzer and could become an excuse if one calls the router support line complaining low speed.
Another limit is the device itself, and in this case iPhone 11. It’s specs are given below.
Wi-Fi specifications for iPhone 11
802.11 standard, name, frequency Maximum PHY data rate Maximum channel bandwidth Maximum MCS index Maximum spatial streams
ax@5 GHz 1200 Mbps 80 MHz 11 (HE) 2/MIMO
ac@5 GHz 866 Mbps 80 MHz 9 (VHT) 2/MIMO
a/n@5 GHz 300 Mbps 40 MHz 7 (HT) 2/MIMO
ax@2.4 GHz 195 Mbps 20 MHz 9 (HE) 2/MIMO
b/g/n@2.4 GHz 144 Mbps 20 MHz 7 (HT) 2/MIMO
(From: https://support.apple.com/guide/deployment/iphone-wi-fi-specification-details-dep268652e6c/web)
https://mcsindex.com gives more details about how the speed on each band is affected by modulation scheme, number of antennas, bandwidth and WiFi standards used, not only for iPhones but for routers as well.
From the iPhone 11 specs, only “n” and “ax” support 2.4GHz if we ignore the older standards “b” and “g”. At 2.4G, The maximum speeds for “n” is 144M whereas for “ax” is 195M. The max bandwidth for both is 20MHz which needs to be set in the router. Setting the bandwidth to 40MHz could lower the speed as the noise power will be doubled.
However, at 5GHz the speed for ac (WiFi 5) is 866M with 80M max bandwidth whereas for ax (WiFi 6) is 1200M also with 80M max bandwidth. These bandwidths should also be specified in the router. Setting the bandwidth too high or too low could lower the speed.
From the iPhone 11 max speeds, it is clear that the wireless link’s speed is not limited by both the A7 and AX21 routers and the standards, but by the iPhone 11 at 2.4G and by Verizon Fios at 5G.
I have Verizon Fios 300M download and upload. Initially, I used an A7, thinking that at 2.4GHz, the router speed is 450M which is higher than iPhone’s 144M(“n”) and 195M(“ax), surely shouldn’t be a problem. But speed test showed that I got only 60M download and 80M upload from the best channel and 20M bandwidth (I tested all the channels and bandwidth combinations).
60M is too slow for me because I have several devices (such as security cameras) using 2.4G. So I called TP Link support line to see what I had done wrong. Most customer supports didn’t know what the problem was the and finally I was connected to a high level support. She said that in real life, I had to multiply the speed by 30-50% and guided me through the various specs of the wireless link. I don’t know where the 30-50% comes from, perhaps it was her empirical experience. If I use the average of 40% and assume that applies to the lower speed of the router and the iPhone, which is 144MHz. 40%x144M is 57M. This was about what I got at 2.4G using the A7 router.
But she also said something about WiFi 6 router and got me thinking perhaps a WiFi 6 router could improve the speed. (I must say that I got excellent support from TP Link, I had gotten calls twice from the specialist unsolicited and many followup emails. All trying to help me solve the low speed problem.)
I then change the A7(AC1700) to an AX21(AX1800), which does support WiFi 6 “ax”.
The main advantage of using AX21 is that it raised the iPhone 11 max speed at 2.4G from 144M to 195M, a gain of 51M. And as a result, in real life, the 2.4G link speed seemed to have increased by about the same amount. Speed test showed that at 2.4G, I now got ~90-110M(download, previously 60M when using A7) and 100-120M(upload) with the channel and bandwidth set on auto. Though the download speed is still less than 195M, the link speed has increased by changing to a router that supports ax and has 4 antennas. Have no idea if a more expensive router will further increase the 2.4G speed.
However, at 5GHz, both routers give 307M download and 330M upload, limited by Verizon Fios max speed of 300M.
When doing speed test, I shut off all 2.4G emitters. I live in a rural area and I suspect there is little interference.
A7 has 3 antennas whereas AX21 has four. Is the speed improvement at 2.4G due to the additional antenna or the support of WiFi 6 or both?
Style: WiFi 6, AX1800Verified Purchase
Archer A7/AX21 2.4G speed for iPhone 11 from 300M Verizon Fios
Reviewed in the United States on March 11, 2022
Archer A7/AX21 2.4G speed for iPhone 11 from 300M Verizon FiosReviewed in the United States on March 11, 2022
5* review for successfully resolved my low 2.4G speed problem, excellent support from TP Link and fast 5G speed that exceeds Verizon Fios max speed of 300Mbps.
The purpose of this review is to compare the 2.4G and 5G speeds of the TP Link Archer A7(AC1700) WiFi 5 router and AX21(AX1800) WiFi 6 router using an iPhone 11 which supports WiFi 6. The highest speed I can test is 300Mbps limited by my Verizon Internet plan. Measurement results using show that using the WiFi 5 router, the 2.4G speed is 60M/80M (UL/DL) and the 5G speed is 307M/330M, whereas using the WiFi 6 router, the 2.4G speed is 110M/120M and the 5G speed is about same.
Newer routers’ real life 5G speed is very high and normally is not a problem, but real life 2.4G speed could be slow. It is not entirely sure which part of the wireless link is limiting the 2.4G speed. Below examines the speed limit of the WiFi standards involved, the router and iPhone 11. The routers are TP Link’s Archer A7(AC1700) and AX21(AX1800). Measured speeds at 2.4G and 5G will also be given.
Router (TP Link) Specs and Supported WiFi Standards
1) Archer A7(AC1700) has has 3 antennas is a WiFi 5 router
2.4G : 450Mbps
5G: 1300M bps
Supported Standards: AX21(AX1800) : 802.11ac(Wi-Fi 5), 802.11b, 802.11ax(Wi-Fi 6), 802.11n(Wi-Fi 4), 802.11g
802.11n, 802.11ac, 802.11ax are also called Wi-Fi 4, WiFi 5 and WiFi 6 respectively.
2) AX21(AX1800) has 4 antennas is a WiFi 6 router
2.4G: 574M bps
5G: 1200M bps.
Supported Standards: AX7 (AC1700) 802.11b, 802.11n, 802.11g, 802.11ac
A7 (AX1800) is a low cost ($60) popular (listed as “Amazon Choice”) WiFi 5 router which supports 802.11 ac whereas AX 21 is a low cost ($90) WiFi 6 router which supports 802.11 ax. WiFi 6 (max speed 9.6G) not only has higher speed than WiFi 5 (max speed 3.5G) but also can support more devices using orthogonal frequency division multiple access. The main differences are given in picture 1.
(Picture 1 from : https://www.mwrf.com/technologies/systems/article/21849959/whats-the-difference-between-wifi-5-and-wifi-6)
Comparing the specs of these two routers, one has a higher 2.4G speed while the other has a higher 5G speed. But in real life, according to my measurements, at 2.4G, the WiFi 6 router has almost twice the speed than the WiFi 5 router. I don’t have a high enough wireless speed plan to test the 5G speed. In my house both routers have the same speed of 310M, limited by the max speed allowed by Verizon Fios 300M.
Speeds specified by the WiFi standards are speeds the router manufacturers trying to meet and they are not the limit, but speeds advertised by the router are the speeds that customers want the router to be able to reach. They become upset if they are unable to get the speeds advertised by the router.
Routers often do not specified under what link conditions these seemingly advertised high speeds could be realized. For example what is the required bandwidth, the number of antennas (the so called MIMO) and how pure the signal has to be (the signal to noise ratio). Is the bandwidth 20, 40, 80 or 160M? Is the signal to noise ratio has to be greater than 10dB?
In real life, link speed depends on how far from the router (the signal strength) and radio interference which falls in band (the signal to noise ratio). The former can be solved by doing the speed test right next to the router, where the transmit signal from the router is at maximum. But for the latter, unless one has a so called Faraday Cage, there is no way to block in-band interference especially at 2.4G, which are used by microwave ovens, Bluetooth and many household devices. Interference is hard to quantify without using a spectrum analyzer and could become an excuse if one calls the router support line complaining low speed.
Another limit is the device itself, and in this case iPhone 11. It’s specs are given below.
Wi-Fi specifications for iPhone 11
802.11 standard, name, frequency Maximum PHY data rate Maximum channel bandwidth Maximum MCS index Maximum spatial streams
ax@5 GHz 1200 Mbps 80 MHz 11 (HE) 2/MIMO
ac@5 GHz 866 Mbps 80 MHz 9 (VHT) 2/MIMO
a/n@5 GHz 300 Mbps 40 MHz 7 (HT) 2/MIMO
ax@2.4 GHz 195 Mbps 20 MHz 9 (HE) 2/MIMO
b/g/n@2.4 GHz 144 Mbps 20 MHz 7 (HT) 2/MIMO
(From: https://support.apple.com/guide/deployment/iphone-wi-fi-specification-details-dep268652e6c/web)
https://mcsindex.com gives more details about how the speed on each band is affected by modulation scheme, number of antennas, bandwidth and WiFi standards used, not only for iPhones but for routers as well.
From the iPhone 11 specs, only “n” and “ax” support 2.4GHz if we ignore the older standards “b” and “g”. At 2.4G, The maximum speeds for “n” is 144M whereas for “ax” is 195M. The max bandwidth for both is 20MHz which needs to be set in the router. Setting the bandwidth to 40MHz could lower the speed as the noise power will be doubled.
However, at 5GHz the speed for ac (WiFi 5) is 866M with 80M max bandwidth whereas for ax (WiFi 6) is 1200M also with 80M max bandwidth. These bandwidths should also be specified in the router. Setting the bandwidth too high or too low could lower the speed.
From the iPhone 11 max speeds, it is clear that the wireless link’s speed is not limited by both the A7 and AX21 routers and the standards, but by the iPhone 11 at 2.4G and by Verizon Fios at 5G.
I have Verizon Fios 300M download and upload. Initially, I used an A7, thinking that at 2.4GHz, the router speed is 450M which is higher than iPhone’s 144M(“n”) and 195M(“ax), surely shouldn’t be a problem. But speed test showed that I got only 60M download and 80M upload from the best channel and 20M bandwidth (I tested all the channels and bandwidth combinations).
60M is too slow for me because I have several devices (such as security cameras) using 2.4G. So I called TP Link support line to see what I had done wrong. Most customer supports didn’t know what the problem was the and finally I was connected to a high level support. She said that in real life, I had to multiply the speed by 30-50% and guided me through the various specs of the wireless link. I don’t know where the 30-50% comes from, perhaps it was her empirical experience. If I use the average of 40% and assume that applies to the lower speed of the router and the iPhone, which is 144MHz. 40%x144M is 57M. This was about what I got at 2.4G using the A7 router.
But she also said something about WiFi 6 router and got me thinking perhaps a WiFi 6 router could improve the speed. (I must say that I got excellent support from TP Link, I had gotten calls twice from the specialist unsolicited and many followup emails. All trying to help me solve the low speed problem.)
I then change the A7(AC1700) to an AX21(AX1800), which does support WiFi 6 “ax”.
The main advantage of using AX21 is that it raised the iPhone 11 max speed at 2.4G from 144M to 195M, a gain of 51M. And as a result, in real life, the 2.4G link speed seemed to have increased by about the same amount. Speed test showed that at 2.4G, I now got ~90-110M(download, previously 60M when using A7) and 100-120M(upload) with the channel and bandwidth set on auto. Though the download speed is still less than 195M, the link speed has increased by changing to a router that supports ax and has 4 antennas. Have no idea if a more expensive router will further increase the 2.4G speed.
However, at 5GHz, both routers give 307M download and 330M upload, limited by Verizon Fios max speed of 300M.
When doing speed test, I shut off all 2.4G emitters. I live in a rural area and I suspect there is little interference.
A7 has 3 antennas whereas AX21 has four. Is the speed improvement at 2.4G due to the additional antenna or the support of WiFi 6 or both?
Images in this review
Top reviews from other countries
DRAGO ARAZIEL
EXCELENTE
Reviewed in Mexico on June 22, 2023Style: AX10000 WiFi 6 Gaming (Newer Model)Verified Purchase
Juan V.
Muy buen Router hasta el momento, largo alcance y estable!
Reviewed in Mexico on June 5, 2021Style: AX6000 WiFi 6 GamingVerified Purchase
Juan V.
Reviewed in Mexico on June 5, 2021
Images in this review
Joseph
It is a good basic router
Reviewed in Canada on October 27, 2020Style: AX6000 WiFi 6 GamingVerified Purchase
Douglas W.
Excellent, value for money
Reviewed in Singapore on May 15, 2021Style: AX6000 WiFi 6 GamingVerified Purchase
Douglas W.
Reviewed in Singapore on May 15, 2021
Images in this review
ALAN GALVANSTER
Regular, aumenta la señal más pero hasta ahí..
Reviewed in Mexico on July 4, 2023Style: AX10000 WiFi 6 Gaming (Newer Model)Verified Purchase
