NEC Display Solutions of America, Inc.U300X Installation GuideDesktop and Ceiling Mount v1.1www.necdisplay.com U300X Page 8 of 8Input PanelControl CodesFunction Code DataPOWER ON 02H 00H 00H 00H 00H 02HPOWER OFF 02H 01H 00H 00H 00H 03HINPUT SELECT COMPUTER 1 02H 03H 00H 00H 02H 01H 01H 09HINPUT SELECT COMPUTER 2 02H 03H 00H 00H 02H 01H 02H 0AHINPUT SELECT HDMI 02H 03H 00H 00H 02H 01H 1AH 22HINPUT SELECT VIDEO 02H 03H 00H 00H 02H 01H 06H 0EHINPUT SELECT S-VIDEO 02H 03H 00H 00H 02H 01H 0BH 13HPICTURE MUTE ON 02H 10H 00H 00H 00H 12HPICTURE MUTE OFF 02H 11H 00H 00H 00H 13HSOUND MUTE ON 02H 12H 00H 00H 00H 14HSOUND MUTE OFF 02H 13H 00H 00H 00H 15HON SCREEN MUTE ON 02H 14H 00H 00H 00H 16HON SCREEN MUTE OFF 02H 15H 00H 00H 00H 17HNote: Contact your NEC rep for codes not listed.Cable ConnectionCommunication Protocol:1 2 3 4 56 7 8 9To GND of PCTo RxD of PCTo TxD of PCTo CTS of PCTo RTS of PCBaud Rate: 38400 bpsData Length: 8 bitsParity: No ParityStop Bit: One bitX on/off: NoneCommunications: Full duplexNOTE 1: It is recommended to set the projector to “Idle Mode” in the Setup menu for best Power ON response.NOTE 2: Pins 2, 3, 5, 6 and 8 are used inside the projector.NOTE 3: For long cable runs it is recommended to set communication speed in the Setup menu to 9600 bps.