... ;5,Easy operation , can operate the system together with the software flexible,we offer free software;6,Support RS ... -232 serial ports remote control;7,Support multi signal input include BNC, YPbPr,VGA,HDMI,RS232;8 ... , if one unit is going bad, only replace it with a new one; 13. Accessories:1 in 4 out ... Power cable,Remote controller,Software. 40inch LCD TFT video digital walls with 20mm bezel