No documentetaion for tplink Archer A5 V4. 20

Hardware Questions and Recommendations
1

From what i see there is no documentetaion on this router, i own one wich i have bricked and im trying to find document about the UART pins on the board and there is none can some one help?

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No markings nothing and rn i dont have the things with me in order to check the pins

2

This is just an educated guess based on the traces and components, but I'd say from top to bottom Tx, Rx, G, Vcc.

  • Bottom connection goes to a branching trace that seems to connect to multiple components in parallel - it looks like the Vcc rail
  • Second from bottom looks like it connects to nothing else, so looks like it may be on the ground plane
  • Top two have resistors, likely pull resistors or current-limiting.

Since that's an unusual configuration for a UART connection, I would be careful about proceeding without a tester.

Most USB to serial adapters don't need Vcc from the serial port. So if you can't wait for a tester, what I would do is connect the serial port's ground to a known ground point on the device - those exposed ground lines for what looks like a solder-trace for a ground shield is a good candidate. Then you can experiment with the Tx and Rx lines on the UART pins, which should be relatively safe.

That said, do proceed with caution.