Not scared of using a solder iron and voiding your warranty?
Remove 2 resistors and place one resistor back at the bottom side of the Wandboard Quad Module.
Top row : 8th resistor counting from the JTAG header REMOVE (R145)
Bottom row : 6th resistor counting from the same side. REMOVE (R174). 5th resistor (R173) ADD one of resistors you removed earlier.
If you want to add a SSD or 2.5 inch harddisk you will also need to make a power cable that takes the 5V and GND signals from the JP4 expansion header.