I just made a PCB with a Teensy 4.1 using these symbols/footprints. I've used them many times before but this is the first time I'm using the USB device pads on the underside of the Teensy. The practical use is to use pogo pins for these if the Teensy is socketed, I don't like Micro USB so I'm carrying it over to a JST connector on the PCB. The pins aren't labeled on the underside so I didn't catch it until I assembled the PCB and tested. I realized D+ and D- are backwards from the Line card that is included with the Teensy. The picture is of the bottom of the Teensy so when you flip it over the pins are swapped.
Another thing I noticed is the footprint for these holes is too small for standard pogo pins. It's like the exact size and while it's good for these to be tight, you'll damage the plated hole installing the pins.
I just made a PCB with a Teensy 4.1 using these symbols/footprints. I've used them many times before but this is the first time I'm using the USB device pads on the underside of the Teensy. The practical use is to use pogo pins for these if the Teensy is socketed, I don't like Micro USB so I'm carrying it over to a JST connector on the PCB. The pins aren't labeled on the underside so I didn't catch it until I assembled the PCB and tested. I realized D+ and D- are backwards from the Line card that is included with the Teensy. The picture is of the bottom of the Teensy so when you flip it over the pins are swapped.
Another thing I noticed is the footprint for these holes is too small for standard pogo pins. It's like the exact size and while it's good for these to be tight, you'll damage the plated hole installing the pins.