82 ODROID-XU4 USER MANUALMake sure that no other videoconfig or vout value is set. Therest of the related settings should be commented out. Save these newsettings and shut the system down.Reconnect the XU4 to the VU5 display, with the touch interfaceUSB cable attached to the USB port on the XU4. Power up the as-sembly and login to the desktop. The assembly will appear as shownin the image above.Heat SinkWhile the standard fan-based active cooler is very effective indissipating heat from the CPU, it can be a noisy option. Noise increas-es as the fan speeds up under heavy load. If you want a low noiseoption, you could use a heat sink. While it is installed, you may noticethe system throttling due to excessive heat, in which can you can re-duce the maximum CPU clock speed to 1.4 GHz.XU4 with heat sinkThe steps required to install the heat sink are available at http://bit.ly/2l288mY.SmartPower2Hardkernel has developed the next generation SmartPower2accessory with an input of 15V 4A and an output of 5.3V 1A (USBhost port) and 5A (terminal block). The latter can be used to power anXU4. The SmartPower2 can be accessed via WiFI and used to controlthe output voltage and power ON/OFF of a connected device, like theXU4. You can monitor the power profile via a smartphone, tablet orPC.It can be used in three operation modes:• WiFi Standalone• WiFi Connected• Telnet Connected