TP-Link TL-WR940N v4 router review

450 Mbps
IEEE 802.11b/g/n
Atheros AR7240 @ 400 MHz
32 MB / 4 MB

TP-Link introduced the TL-WR940N v4 router in 2012. It is powered by Atheros AR7240 @ 400 MHz chipset, 32 MB of RAM, and 4 MB of flash memory.

Want to know if this TP-Link router stands out? Keep reading to know!

Table of Contents

  • TP-Link TL-WR940N v4 specifications
    • Body, dimensions, weight
    • System, chipset, RAM, flash, power supply
    • Network, protocols, WAN and LAN ports
    • Wireless, antennas, speed, security
    • Connectivity
    • Administration, user interface, login information
  • Verdict, Pros and Cons
  • Photos
  • Comparisons

Our personal experiences and opinions form the basis of this article. We aimed to share insights on a topic, and we hoped others would find it useful and inspirational. The specs below rely on official manufacturer data, but we also consider user reviews. If you noticed any mistakes or missing details about the TP-Link TL-WR940N v4, please let us know. Furthermore, we strive to deliver a thorough and precise overview.

TP-Link TL-WR940N v4 / TL-WR940NV4

If you need more features, you may want to consider better TP-Link routers. Or, you can look at other routers on the market. TP-Link has a history of introducing innovative features and technologies into their products.

TP-Link TL-WR940N v4 specifications

NameTL-WR940N v4
Rated 4/5 based on 1534 user votes.


Dimensions230 x 144 x 35 mm

If you plan to move or travel a lot and need to take your router with you, the size is important. It needs to be small to be easy to carry.


ChipsetAtheros AR7240 @ 400 MHz
Flash4 MB
Alternative OSOpenWRT
Power supply9 V / 0.85 A

The Atheros AR7240 @ 400 MHz CPU provides processing power. It handles tasks and services within the TL-WR940N v4 router. The amount of RAM in a router can affect its performance. It also affects its capacity to handle concurrent operations and traffic. The 4 MB flash memory in the router serves as the storage medium for the router's firmware. The firmware upgrade process may vary depending on the router model. However, it often involves accessing the router's web-based administration interface.

Other router operating systems offer more customization options. They also have advanced features. Router makers compare this to the default firmware. OpenWrt offers many features and capabilities. They extend the functionality of networking hardware. The TP-Link packages the TL-WR940N v4 router with 9 V / 0.85 A PSU.

TP-Link TL-WR940N v4 (TL-WR940NV4) / 1


LAN ports4 x 10/100 Mbps
WAN ports1 x 10/100 Mbps
Mobile networkno
VPN supportno

Like many modern routers, the TL-WR940N v4 supports many network standards too. The IPv4 uses 32-bit addresses, represented as four sets of numbers separated by periods (e.g. The TL-WR940N v4 features a Fast Ethernet WAN port that has a maximum speed of 100 Mbps.


Antennas3 x 5 dBi
2.4 GHzyes
5 GHzno
60 GHzno
StandardsIEEE 802.11b/g/n
Speed450 Mbps
Transmit power20 dBm
Guest networkno

A well-positioned antenna can reduce interference and signal weakening. This leads to a more reliable connection. The TL-WR940N v4 is compatible with 2.4 GHz Wi-Fi networks. This is a Wi-Fi 4 router, with slower data transfer speeds. This can result in slower downloads, video buffering, and reduced performance. Real-world TL-WR940N v4 router speeds are lower than its theoretical maximum speed. WEP was the first Wi-Fi security protocol. But it is now seen as weak and easy to hack.

The introduction of WPA2 (Wi-Fi Protected Access 2) improved upon WEP. It provides stronger security. WPS (Wi-Fi Protected Setup) provides an easy method. It connects devices to a Wi-Fi network.

TP-Link TL-WR940N v4 (TL-WR940NV4) / 2


USB portsno
Print serverno
File serverno

The TL-WR940N v4 router doesn't have file-server or print-server functionality.


Default IP192.168.1.1
Default usernameadmin
Default passwordadmin

If you can't log in to your TP-Link router's setup panel, try resetting it. A reset can help you troubleshoot. It is highly recommended to change the default password of your TL-WR940N v4 router. Do this after the initial setup.

Pros and Cons

Every router, including this TP-Link one, has its good sides and not-so-good sides. Let's take a closer look at both to get a full understanding of what this router can do. We'll talk about what it does well and also where it could use some improvements. Just remember, this is just what I think, and you might see things differently.


  • OpenWrt compatible
  • WPS friendly


  • insufficient flash
  • lack of Gigabit LAN
  • Non-gigabit WAN port
  • missing Wi-Fi 6 support
  • lacks Wi-Fi 5 compatibility
  • reduced Wi-Fi bandwidth
  • incompatible with WPA3
  • no USB connectivity

TP-Link TL-WR940N v4 photos

TP-Link TL-WR940N v4 / TL-WR940NV4 photo
TP-Link TL-WR940N v4 / TL-WR940NV4 photo
TP-Link TL-WR940N v4 / TL-WR940NV4 photo
TP-Link TL-WR940N v4 / TL-WR940NV4

TP-Link TL-WR940N v4 comparisons

We've noticed that many of our visitors like to compare the TP-Link TL-WR940N v4 router with these popular models.

If there’s information about the TP-Link TL-WR940N v4 that you would like to see on this site, then write to us.

Robert Miller
For over 15 years, I've immersed myself in the world of networking devices as a tech aficionado. I've dedicated myself to thoroughly testing and analyzing routers and other networking gear. I aim to provide thorough reviews. They will give you the knowledge needed to improve your network.