Products
TP-Link Archer AX21
ASUS RT-AX55
Tested using Methodology v0.8.2
Updated Jan 08, 2026 03:08 PM
SEE PRICE
Amazon.com
Tested using Methodology v0.8.2
Updated Dec 11, 2025 04:12 PM
SEE PRICE
Amazon.com
Wi-Fi Version
Wi-Fi 6 (ax)
Multi Band
Dual Band (2.4 / 5)
Test Configuration
Standalone
Wi-Fi Version
Wi-Fi 6 (ax)
Multi Band
Dual Band (2.4 / 5)
Test Configuration
Standalone
Our Verdict
TP-Link Archer AX21
ASUS RT-AX55
The TP-Link Archer AX21 and the ASUS RT-AX55 are both Wi-Fi 6 routers. They perform similarly, but the ASUS delivers slightly better range and faster speeds overall.
Variants
- Archer AX21 (Black)
- RT-AX55 (Black)
- RT-AX55 (White)
Check Price
Black
Archer AX21
SEE PRICE
Amazon.com
Black
RT-AX55
SEE PRICE
Amazon.com
Black
Archer AX21
SEE PRICE
B&H
White
RT-AX55
SEE PRICE
Amazon.com
Black
Archer AX21
SEARCH
BestBuy.com
Black
Archer AX21
SEARCH
TP-Link
Black
Archer AX21
SEARCH
Walmart.com
Main Differences for
Apartment/Condo
Apartment/Condo
Threshold
Apartment/Condo
7.2
7.2
Full Comparison
Design
Dimensions
7.2
6.8
Dimensions Photo
Compare High-Res
Compare High-Res
Height
6.18" (15.7 cm)
8.11" (20.6 cm)
Width
10.24" (26.0 cm)
9.25" (23.5 cm)
Depth
5.91" (15.0 cm)
5.91" (15.0 cm)
Depth With Cables
7.48" (19.0 cm)
7.05" (17.9 cm)
Network Ports
7.1
7.1
Ports Photo
Compare High-Res
Compare High-Res
WAN Port Speed
1.0 Gbps
1.0 Gbps
LAN Port Count
4
4
10 Gbps Ports
0
0
2.5 Gbps Ports
0
0
1 Gbps Ports
5
5
10 Gbps Ports (SFP+)
0
0
USB Ports
USB-A 3.0 Ports
0
0
USB-A 2.0 Ports
0
0
USB-C Ports
0
0
USB-C Speed
N/A
N/A
In The Box
In The Box Photo
Compare High-Res
Compare High-Res
Wall/Ceiling Mount
8.0
8.0
Mount Photo
Compare High-Res
Compare High-Res
Mount Type
Screw Head Slot
Screw Head Slot
Wi-Fi
Interior Long Range
6.9
7.2
Long Range Graph
Preview Graph
Preview Graph
Lowest Speed
102 Mbps
141 Mbps
Average 5GHz Speed
213 Mbps
279 Mbps
Average 6GHz Speed
N/A
N/A
Test Configuration
Standalone
Standalone
Interior Short Range
7.7
7.8
Short Range Graph
Preview Graph
Preview Graph
Highest Speed
669 Mbps
676 Mbps
Average 5GHz Speed
470 Mbps
554 Mbps
Average 6GHz Speed
N/A
N/A
Test Configuration
Standalone
Standalone
Wi-Fi Specifications
6.3
6.3
Wi-Fi Version
Wi-Fi 6 (ax)
Wi-Fi 6 (ax)
6GHz Band
No
No
Multi Band
Dual Band (2.4 / 5)
Dual Band (2.4 / 5)
DFS Channels
No
No
MLO Implementation
Beacon Frame
Compare High-Res
Compare High-Res
MLO Support
No
No
EMLSR/EMLMR Support
No MLO Support
No MLO Support
Max Number Of Simultaneous Links
No MLO Support
No MLO Support
TID-To-Link Mapping Negotiation Support
No MLO Support
No MLO Support
Wi-Fi Coverage
Indoor Coverage - Same Story
Wi-Fi Coverage Map
Compare High-Res
Compare High-Res
Indoor Coverage - 1 Story Above
Wi-Fi Coverage Map
Compare High-Res
Compare High-Res
Wi-Fi Coverage Map (Dual Mesh)
Compare High-Res
Compare High-Res
Broad Coverage
Outdoor Coverage Map
Compare High-Res
Compare High-Res
Check Price
Black
Archer AX21
SEE PRICE
Amazon.com
Black
RT-AX55
SEE PRICE
Amazon.com
Black
Archer AX21
SEE PRICE
B&H
White
RT-AX55
SEE PRICE
Amazon.com
Black
Archer AX21
SEARCH
BestBuy.com
Black
Archer AX21
SEARCH
TP-Link
Black
Archer AX21
SEARCH
Walmart.com
To access
and
Become an Insider
unlimited full product reviews,
product prices
other exclusive site features
TP-Link Archer AX21
ASUS RT-AX55
Comments
TP-Link Archer AX21 vs ASUS RT-AX55: Main Discussion
What do you think of these products? Let us know below.
Looking for a personalized buying advice from the RTINGS.com experts? Insiders have direct access to buying advice on our insider forum.