Hi all, I own a UDOO Quad with Android v4.3 JB and a 7" LCD display installed and working. I would like to know if there is a way to power down correctly my UDOO without an external keyboard or a serial link to a PC. At first I thought that the PWb/SW2 pushbutton near the reset button had this feature but i doesn't do anything even if I keep it pressed for several seconds. I also observed that using an external keyboard equipped with a power button (A4Tech model KL-5), when I briefly press the power button Android goes into a sleep state but the 7" LCD keep displaying the last image shown when Android was running but that periodically modify its brightness and color (frequency of about 1 Hz); instead the image shown on an external monitor connected to the HDMI video output regularly becomes black. In this state, if I press the power button againg, Android returs to be operative but the touch screen doesn't work anymore; I must restart the system to have the touchscreen working again. I also noted that if I keep pressed the power button on the external keyboard for several seconds, the Android power control menù appears on the screen but, if I confirm the intention to switch off Android, after some seconds the system seems to hang completely and to remain locked for about 1 minute (it desn't respond to any external command) then restarts by itself. Thank you in advance for any hint on how to solve these problems. Regards.