User  shows us how to connect your Raspberry Pi USB to Mac and FreeBSD. A CP2102 serial converter is necessary to do this task. Follow the link below for the short tutorial.

Raspberry-Pi-USB-UART-Cabling

I play with my Raspberry Pi so rarely that I forget how to use my CP2102 serial converter to connect from my iMac or FreeBSD laptop to the Raspberry Pi, so I thought I’d write a blog post and then I’d have an easy place to go back to remember how…

Full tutorial: http://hashbang0.com/2015/12/29/raspberry-pi-usb-gpio-os-x-and-freebsd/