@TL-BOD4 low connectio.. What can I do? 

@TL-BOD4 

We will get some details first and try to fix it. 

1. Who is your ISP and what is the bandwidth you paid? 

2. What is the speed you can get from the TL-WR841N by wired cable and wireless separately? You can run a speed test for 3 times with computer connected to it.

3. Meanwhile, please verify its wired/wireless negotiation speed as the instruction: https://www.tp-link.com/support/faq/2265/

Note: For wired negotiation speed, it is the same; while you need right click on local area connection or ethernet. 

4. What is the current hardware and firmware version of the TL-WR841N?

5. Besides, you can refer to the instruction below to narrow down the issue. 

https://www.tp-link.com/support/faq/2170/

Thanks in advance, and have a nice day.