I wrote https://download.freebsd.org/ftp/releases/arm64/aarch64/ISO-IMAGES/12.2/FreeBSD-12.2-RC1-arm64-aarch64-PINE64.img.xz on a μSD card today and booted my pine64. I attached USB mass storages to both USB port. Sadly the USB dongle on the upper port was not recognized.
To verify that it is not a hardware problem I wrote armbian (based on Debian buster) to the same μSD card, booted and attached the same USB sticks. It worked.
I have not yet tried FreeBSD 13.
I tried https://download.freebsd.org/ftp/releases/arm64/aarch64/ISO-IMAGES/12.2/FreeBSD-12.2-RC2-arm64-aarch64-PINE64.img.xz and it also does not recognize the USB mass storage in the upper USB port. Not even the LED on the USB stick is flashing.
I am unable to test with https://download.freebsd.org/ftp/snapshots/arm64/aarch64/ISO-IMAGES/13.0/FreeBSD-13.0-CURRENT-arm64-aarch64-PINE64-20201001-e18fc94e525.img.xz as it ran in a kernel panic during boot.