archer t4u ac1200 linux

TP-Link Archer T4U – 2.4/5GHz – Ubuntu/Debian setup

TP- Link Archer T4U – AC 1200 – Dual Band USB Adapter


Interesting facts:

  • 2 year warranty from the manufacturer
  • 1200Mbps Wireless Speed
  • 2.4 and 5GHz Dual Band
  • USB 3.0
  • 802.11 ac and 802.11 a/b/g/n backwards compatibility
  • Windows 8/MAC setup instructions
  • Comes with usb extension cord

Why I bought this ?

Because a picture is worth a thousand words.

Old antenna setup:

install new wifi adapter linux

I promise, this laptop is fine. It is just missing it’s 4K screen

New setup:

tp-link t4u linux

Setup (Ubuntu 16.04)

Not recommended:

sudo apt install rtl8812au-dkms




mkdir -p /tmp/t4u

cd /tmp/t4u




cd rtl8812AU_8821AU_linux-master

Compile from source


sudo make install

Load Module

sudo modprobe rtl8812au

Setup DKMS

sudo apt-get update

sudo apt-get install dkms

cd /tmp/t4u/rtl8812AU_8821AU_linux-master/

sudo cp -R . /usr/src/rtl8812AU_8821AU_linux-1.0

sudo dkms add -m rtl8812AU_8821AU_linux -v 1.0

sudo dkms build -m rtl8812AU_8821AU_linux -v 1.0

sudo dkms install -m rtl8812AU_8821AU_linux -v 1.0

It should be working now ! Just connect to your wifi router or to the neighbour’s unprotected wifi !


  1. Not working ! What should I do?
  • Relax!

  • Run this command:

  • ifconfig

Assuming that you already had an integrated wifi installed, and it’s id was wlp2s0, it will show something like this:

tplink tp4u ac1200 linux install

It means your integrated adapter is still active, and needs to be disabled.

2. How to disable my onboard wifi adapter ??

  • First we need to get the names of the adapters

  • Run this command:

  • iwconfig

  • –> iwconfig is like ifconfig but for wireless

  • so now you should see all your wireless adapterstp-link tplink archer t4u ac1200 linux

  • Now we’ll proceed and disable the onboard wifi adapter and enable our new tp-link.

  • Assuming that onboard (wlp2s0) and the new one (wlxf4f26d14afd5) – you will know by seeing that it is in non-associated mode

  • Disable onboard wlp2s0 using this command:

  • sudo ifconfig wlp2s0 down

  • Enable tplink using:

  • sudo ifconfig wlxf4f26d14afd5 up

  • Note: change “wlxf4f26d14afd5” to whatever name is on your system

  • you should see your new adapter when you run

  • sudo ifconfig
    tp-link t4u archer ac1200 linux ubuntu

Now that the tplink t4u is activated you can associate it with whatever access point you want !


tp-link t4u archer ac1200 linux ubuntu

  • Running iwconfig again:

  • iwconfig

tplink archer t4u ac1200 linux

  • you will notice that wlp2s0 is now:  “Not-Associated”

  • and wlxf4f26d14afd5 is on:  access point xx:xx:x:xx:xx:xx

3. It still doesn’t work. I don’t see any new adapters using iwconfig.

  • Reboot your system and try FAQ again.

  • sudo reboot

Thoughts/Review on the TP-Link archer T4U

1.Awesome network reception –

Before (Killer 2500):

  • Link Quality=98/100 Signal level=60/100 Noise level=0/100
  • Consistent 2.5 bars (mid)

After (TP-link t4u)

  • Link Quality=100/100 Signal level=94/100 Noise level=0/100
  • Consistent 5 bars (max)
  • tplink t4u ac1200

Network reception is way better and it even catches nearby networks that my E2500 does not.

2. Latency –

Latency is consistent on both the E2500 and T4U. Response time to servers were similar on both wifi a/b/g/n and wifi ac. No complaints there.

3. Download –

Killer E2500 on wifi ac:

  • Consistent download speed at max speed

TP-Link T4U on wifi ac:

  • Frequent disconnections at max speed(adapter issue or driver issue?)

Yes, I got disconnected a number of times when I was downloading stuff. All heavy downloads consistently failed on the TP-Link T4U. I thought it was a driver issue and only OS related. But there have been various reports of these disconnects on Windows too.

4. Box contents-

  1. A manual for MacOs and Windows 8 setup – not useful for me
  2. An extension usb cable – that was a nice addition, better than plugging it directly into your usb with a large adapter hanging out, and the high possibilty of accidental breakage.


Wifi a/b/g/n – If you are planning to use the TP-Link T4U for wifi a/b/g/n alone, you are safe, it will perform consistently.

Wifi ac – A big NO-NO with the frequent disconnection issues when doing heavy downloads. It does well for other things though.

Signal – If you have low signal issues, this will be perfect for you ! It never goes below 90% signal level.

One line: For wifi ac alone, don’t buy it. For gaming/browsing/heavy downloads on wifi a/b/g/n it’s great with awesome signal reception levels.


Driver Github repo

Top Linux compatible usb adapters

Installation instructions on askubuntu

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