the recommendations from:&nbsp;<a href="https://software.intel.com/content/dam/develop/external/us/en/documents/uefi-firmware-porting-guide-for-the-intel-atom-processor-e3900-series-820187.pdf">https://software.intel.com/content/dam/develop/external/us/en/documents/uefi-firmware-porting-guide-for-the-intel-atom-processor-e3900-series-820187.pdf</a><br /><br />to edit:<br />&nbsp; gPlatformModuleTokenSpaceGuid.PcdSerialIoUartNumber|2|UINT8|0x10001011<br /><br />But how can I set UART2 for serial output ?