The pins A8 and B8 on a USB connector typically correspond to the GND (ground) pins. In your schematic, they should be connected to the common ground net of your circuit.

Here's how you can proceed:

These connections ensure that the different ground points in your design are electrically unified, maintaining a common reference potential across your circuit. This is crucial for the proper functioning of your USB interface and overall device operation. Let me know if you need more details or assistance!