@dawndreds Hello, the Archer T2U supports dual band, if you want to switch bands with this adapter, you can click the wifi icon on your computer and select the band you preferred to connect. May it...

@Jatin74 t120100 2c1 is a power adapter sold in mainland of China. While as a global tech support, we are not familiar with it. There is another tech support team who can help you and give you a...

@chiko Below is the download link of the firmware for the TL-WN823N v3. https://www.tp-link.com/support/download/tl-wn823n/#Driver The first one is compatible with Windows XP. Good day.

@Heero-Yui @M7sthlm Thanks for your clarification. Our engineer has been working on it, and they offered a beta firmware which you can try to install and verify whether it works....

@Na1 Both TL-WR842ND and Archer C50 have the 100Mbps ports, theoretically, they can handle the current bandwidth you paid. Back to your case, we will do some troubleshooting to locate this issue and...

@jessypaquette Hello, what is the model numbe rof the router? It starts with Archer. Please show us a screenshot of the speed test with the computer connected to the TP-link router by wired cable and...