Plug a USB to mini-USB cable into the 'CN6' mini-USB connector on the Udoo Quad card, and connect it to a USB port on your Windows PC. Install the USB driver available here
http://www.silabs.com/products/mcu/pages/usbtouartbridgevcpdrivers.aspx for Windows, and run Putty
http://www.chiark.greenend.org.uk/~sgtatham/putty/ under Windows. Boot the Udoo, and you'll see all the familiar Linux Console boot dmesges scrolling by. It's all documented here:
http://udoo.org/download/files/Documents/UDOO_Starting_Manual_beta0.4_11_28_2013.pdf.
ArchARM runs circles around Ubuntu with Xfce4 installed.
I just wish I could figure out how to get WiFi operational on the Udoo Quad. Have you any idea what kernel driver is required?
A step-by-step tutorial would be useful....
The Udoo 5MP camera just arrived, and I'm anxious to see if ArchARM supports it, but I'm having some difficulty getting the ribbon cable into the connector on the Udoo Quad card.