tp-link Archer TX20UH High Gain Dual-Band Wireless USB Adapter User Guide

tp-link Archer TX20UH High Gain Dual-Band Wireless USB Adapter

Product Information

The TP-Link wireless adapter allows you to connect your computer to a wireless network. It supports various security encryption methods and offers a range of troubleshooting options to help you resolve connectivity issues.

Product Usage Instructions

Troubleshooting: Case 1 – Authentication Problem, Password Mismatch

1. Make sure you have entered the correct password. If you are unsure, refer to the FAQ section on how to find or change the wireless password on TP-Link products.
2. During the initial connection, you may be asked to enter a PIN number. This PIN is different from the Wireless Password/Network Security Key and can be found on the back panel of your wireless router/modem. If you cannot find the PIN or it is incorrect, choose “Connecting using a security key” and enter the Network Security Key/Wireless Password instead.
3. If the error message still appears, verify the wireless password on your router/modem. Contact your router’s support for assistance if you are unsure how to confirm the wireless password.

Note: The wireless password/Network Security Key is case sensitive.

Troubleshooting: Case 2 – Windows Unable to Connect / Cannot Join Network / Slow Connection
There are several possible causes for this issue:

1. Weak wireless signal: Check the signal strength of your network. If it is weak (1~3 bars), move closer to the router and try connecting again.
2. Wireless MAC filtering or access control: Ensure that Wireless MAC Filtering or Access Control is disabled on your router.
3. Try the following suggestions:
4. Change the wireless name and password.
5. Change the wireless security encryption.
6. Change the channel width.
7. Change the wireless mode.
8. Other suggestions:

  * Try connecting via WPS (Wi-Fi Protected Setup) by pressing the WPS buttons on the router and adapter. Refer to the specific instructions for Windows 7 (WPS/QSS) for more details.
  * Reinstall or update the driver for your wireless adapter. Contact computer/wireless adapter support for assistance with updating the driver.
  * Refer to the article “Why cannot I connect to the secured wireless network of the router?” for additional solutions.

Installing TP-Link Wireless Adapter Manually on Windows XP
Note: This installation method applies when the adapter fails to install through the .EXE program and requires downloading a .inf file. Ensure that you have downloaded the latest driver from the TP-Link official site and extracted the zip file to locate the .inf file.

1. Click on Start and go to Run…
2. Enter “devmgmt.msc” and click OK.
3. Find the newly detected hardware, right-click it, and select Update Driver…
4. Select “No, not this time”.
5. Select “Install from a list or specific location (Advanced)”.
6. Select “Don’t search. I will choose the driver to install”.
7. Select “Show All Devices”.
8. Click “Have Disk”.
9. Click “Browse…” and locate the .inf file.

Follow these steps to successfully install the TP-Link wireless adapter manually on Windows XP.

Why cannot I connect to my wireless network

Troubleshooting

Case1. the authenticating problem, password mismatch

1. Make sure your password typed is correct. You can refer to this FAQ to find the wireless password: How to find or change the wireless password on the TP-Link products
2. Sometimes it will ask you to type in a PIN number when you connect to the wireless network for the first time. This PIN number is different from the Wireless Password/Network Security Key. Usually, you can only find it on the back panel of your wireless router/modem. If you cannot find the PIN or PIN incorrect, you may choose “Connecting using a security key instead”, and then type in the Network Security Key/Wireless Password.

If it continues on saying network security key mismatches, it is suggested to confirm the wireless password on your wireless router/modem. Please contact your router’s support for help if you  don’t know how to confirm the wireless password.

NOTE: Wireless password/Network Security Key is case sensitive.

Case 2. Windows was unable to connect to XXX / Cannot join this network / Taking longer than usual to connect to  this network. There are various causes of this kind of problem:

1. Weak wireless signal.
   Check the wireless signal strength of your network. If it is weak (1~3 bars), please move closer to the router and try again.

2. Wireless mac filtering or access control function block the specified wireless clients to connect.
   Check the wireless settings on the router. Make sure Wireless MAC Filtering or Access Control is NOT enabled.

3. Too much interference

4. Try to change the wireless Channel of the router to reduce interference from other networks.

5. For example:

    * For the 2.4GHz channel, you can change the channel to 1, 6, or 11 to test.
    * For the 5GHz channel, you can change channels 36, 52, or 149 to test  

You can refer to this FAQ to change the wireless channel: https://www.tp- link.com/en/support/faq/3085/

2. Try to turn off other wireless routers or devices like microwave/soundbar/bluetooth

4. Your wireless clients have some problems.
5. Try to turn off and turn on/reboot your wireless clients to connect to the Wi-Fi.
6.  Contact the support of your wireless clients.
7. Some devices don’t support specified wireless settings like encryption or wireless mode.
   You can refer to this FAQ to change the wireless settings: How to Change your Security Settings on your TP-Link Router (new UI)

Suggestion:

1. Change the wireless name and wireless password
2. Change the wireless security encryption
3. Change the channel width
4. Change the wireless mode

Other suggestions

1. Try to connect via WPS. Press the WPS button on the router and then press the WPS button on the adapter. For more details, you can refer to How to connect to a wireless network while a PIN code is required in Windows 7 (WPS/QSS).
2. Re-install or update the driver for your wireless adapter of the computer. Please contact computer/wireless adapter support for help if you don’t know how to update the driver.
3. Refer to Why cannot I connect to the secured wireless network of the router? for more solutions.

How do I install TP-Link wireless adapter manually on Windows XP?

User Application Requirement Updated 06-29-2022 03:15:06 AM 658784  This Article Applies to:

Note: This article applies to the situation that failed to install the adapter through .EXE program and the adapter has .inf file to download.
(please download the latest driver from TP-Link official site, and extract the zip file to see whether your adapter has .inf file.)

• Before the installation, please make sure the adapter is connected to the computer and is detected by the system.

1. Step 1
   Click on Start, and go to Run…

2. Step 2
   Input “devmgmt.msc” and click OK.

3. Step 3
   Find the new detected hardware, right click it and then click Update Driver…

4. Step 4
   Select No, not this time.

5. Step 5
   Select Install from a list or specific location (Advanced).

6. Step 6
   Select Don´t search. I will choose the driver to install.

7. Step 7
   Select Show All Devices.

8. Step 8
   Click Have Disk.

9. Step 9
   Click Browse….

10. Step 10
    Point to the inf. file in the driver folder, and then click Open.

11. Note: Is your computer running the 32-bit or 64-bit version please click Start, right-click My Computer, and then click Properties.

12. If “x64 Edition” is listed under System, you’re running the 64-bit version of Windows XP.

13. If you don’t see “x64 Edition” listed under System, you’re running the 32-bit version of Windows XP.

14. The edition of Windows XP you’re running is displayed under System near the top of the window.

15. Step 11 Click Next.

16. Step 12 Click Continue Anyway.

17. Step 13 Click Finish.

As yet, the adapter has been successfully installed. You can go to Device Manager and check Network Adapters.

What should I do when the driver for my adapter is not allowed on my

windows computer?

• User Application Requirement Updated 06-29-2022 02:24:40 AM 121934 This Article Applies to:
• When we are trying to install the network adapter, we may get the following warning:
  • Case 1
  • Case 2
  • Case 3
• We get these messages because the TP-Link driver has not been digitally signed by Microsoft Windows. But the driver is harmless to your system or your computer. Just go on with your installation.

Here are solutions for these cases:

1. Solution for Case 1
   Click on Continue Anyway, go on installing.

2. Solution for case 2
   Click on install this driver software anyway, go on installing.

3. Solution for case 3

4. Click on OK.

5. Right click on My computer menu, go to Properties.

6. Go to Hardware -> Driver Signing -> check Ignore, click on OK.

How to improve the speed of TP-Link wireless adapters

User Application Requirement Updated 06-28-2022 09:34:36 AM 725513 This Article Applies to:

• Some customers may wonder why their TP-Link wireless adapters get much slower speed than other wireless devices connecting to the same wireless network. This article will guide you how to improve the speed of TP-Link wireless adapters from different aspects.
• Before we start, let us make it clear that there are many factors affecting the speed of a wireless adapter, including the location of the adapter, the interference from other devices, the association speed between the adapter and the router, the driver of the adapter, the firmware of the router, and the computer itself. We will introduce some solutions to improve the speed of TP-Link wireless adapters based on these six factors.

The Location of the Adapter

1. The distance and obstacles between adapter and router. As we know, each wall or ceiling will have a negative effect on wireless radio particularly the ones built by solid metal material. So, please keep the path between wireless router and TP-Link adapter as clear as possible.
2. The direction and angle of antenna on TP-Link wireless adapter and main router. Antenna on wireless devices are used to receive and send wireless signal. To have a stronger wireless  signal, we recommend to place antennas at 45 degrees (diagonally) or 0 degrees (straight out  parallel to the floor) which will be more effective, as the picture below.

Note: for PCIE adapters, please take the location of the computer main board into your consideration, and make sure the computer main board not interfere the transmission of antenna  on TP-Link wireless adapters.

• The Interference from Other Devices on 2.4G
  Nowadays, more and more network devices take 2.4G frequency to transmit signals, and various electromagnetic uses 2.4G frequency to work, which makes 2.4G frequency becomes too crowed to convey signals. Thus, we do suggest our customers to use 5G frequency for network activities  to have the best network experience.

• The Association Speed between the Adapter and the Router

  • Slow association speed will affect the internet speed as well. According to the working features on Wi-Fi, normally download speed of 5G would be around 50% of wireless association speed and download speed of 2.4G would be around 30% – 50% of wireless link speed.
  • To guarantee that your TP-Link wireless adapter gets better speed, we need to let the wireless association speed archive to the highest value. Please change the wireless channel and channel bandwidth of your router. Different channels will have different performance. The more crowded the channel is, the poorer performance it will get. Channel Bandwidth is also important to the wireless connection, make sure it is set to the best or biggest value for your router.

• The Driver of the Adapter

  • Our TP-Link always releases new drivers for our wireless adapters to improve their working performance when any issues found and needed to be solved. To ensure a better performance and reliability, please update the wireless adapter’s driver to the latest one released by TP-Link. You can download the latest driver from our official web site.

• The Computer Itself

  • As our experience, some anti-virus software installed on the computer would have a great impact on the download speed of the adapter, such as SmartByte, Avast and so on. Please uninstall these kinds of software temporarily to test the download speed.

• The Firmware of the Router

  • Please do the comparison test using your other wireless devices in the same location as TP-Link wireless adapter. If they all have the same speed as TP-Link adapter, please make sure your router is running the latest firmware. Also you may contact the support of your router to figure it out since they are more professional and familiar with your router.
  • Please contact TP-Link support with the following information after trying above solutions but all to no avail.

1. the download speed on your other wireless devices in the same location as TP-Link adapter.
2. the wireless association speed of TP-Link adapter. Please refer to the following instruction to check the wireless association speed: How to check the associated/link speed on a wireless client.
3. the driver version and computer system information by referring to How to check driver version of TP-Link adapters and system information of your computer?
4. the model number of your router.

Why cannot the adapter detect the 5G Wi-Fi of my router?

Troubleshooting
Updated 10-28-2021 05:57:57 AM  227337 This Article Applies to:

Note: This FAQ is only for the dual-band wireless adapter and wireless router.

• Case1: Can not see any 5G Wi-Fi.
  • The old wireless adapter that doesn’t support 5G installed on your computer may affect the 5G wifi broadcasting of the TP-Link wireless adapter, so if you are unable to see the 5G wifi, please disable the old wireless adapter following the steps:
  • To disable the other adapters, please click the WIN on the keyboard, then input the network. Open the View Network Connection. Then check the Wi-Fi list again if you can see the 5G Wi-Fi or not. If not, please go to case2.
• Case 2:Cannot see the 5G Wi-Fi of your router
  • If you have an old wireless adapter, please disable it first to check if it’s working. If the same story, please do the following troubleshooting:
  • Open the management page of your main router, go to the wireless settings, then change the channel of 5G Wi-Fi to 36. Then check the Wi-Fi list again. Here we take the TP-Link router as an example

It might be affected by DFS, for the details, please refer to :https://wifinigel.blogspot.com/2018/05/the-5ghz-problem-for-wi-fi- networks-dfs.html
If the 5G Wi-Fi still does not show in the Wi-Fi list, please contact the support team.

How to find suitable driver for my network adapter

Q &A of functional explanation or specification parameters

• Updated 04-29-2019 07:15:37 AM 237384
• This Article Applies to:
• User’s Application Scenario
• Find the suitable driver for the network adapter and install it.

How can I do that?

• For example, I just bought a TL-WN722N, and want to install the driver on my Windows 10 PC.
• Note: For some TP-Link wireless adapters, some Windows operation systems have equipped with the built-in inbox driver, which means that you could plug and play.

1. Please find and install the driver for the network adapter via CD rom, which is included on the box package.
2. Or please go to TP-Link official website https://www.tp-link.com , and go to Download center.
3. Select TL-WN722N and click Driver page, and then you can find the TP-Link official driver for Windows 10.
4. Click the driver for Windows 10 to download it; for the installation, you can refer to the setup video. https://www.tp-link.com/support/download/tl-wn722n/#video

References

• The 5GHz “Problem” For Wi-Fi Networks: DFS
• TP-Link
• Contact | TP-Link
• Download for TL-WN722N | TP-Link
• How to Change your Security Settings on your TP-Link Router (new UI)
• TP-Link - Contact Technical Support
• Download for TL-WN722N | TP-Link
• How to check the associated/link speed on a wireless client | TP-Link
• How to check driver version of TP-Link adapters and system information of your computer
• How to connect to a wireless network while PIN code is required in Windows 7 (WPS/QSS) | TP-Link
• How to Change your Security Settings on your TP-Link Router (new UI)
• What if I forget my wireless password of TP-Link Wi-Fi router?
• Why cannot I connect to the secured wireless network of the router? | TP-Link
• Download Center | TP-Link United Kingdom

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