serial pc board pass through, use your board like a usb-serial 3.3V level converter,
History
FRDM seral pc board pass through based in :; https://mbed.org/handbook/SerialPC
2013-10-05, by felipeM [Sat, 05 Oct 2013 19:46:21 +0000] rev 0
FRDM seral pc board pass through based in :; https://mbed.org/handbook/SerialPC