White light Serial port
Info about the WL MBWE's Serial port
The user bleep has contributed with some info of the White light (WL) MBWE (source: zeroone.homeunix.net has moved to http://mockmoon-cybernetics.ch/computer/wdh1nc10000/serial-console.html)
It is near the Power button "SW1" and its pinout is as follows:
Pin 1 = +3.3V
Pin 2 = RxD
Pin 3 = TxD
Pin 4 = GND

See also galmiche article on Modifying hardware by Herve GALMICHE about how to connect a PC to serial port link.
2disks version of MBWE (raid) has serial port on connector J10:
