8 How to assemble your monitor hardware 2. Connect the PC video cable.Do not use both DVI-D cable and D-Sub cable on the same PC. The only case in which both cables can be used is if they are connec ted to two different PCs with appropriate video systems. Connect one end of the DVI-D cable to the monitor DVI-D jack and the other end to the DVI-D port on your computer. (optional)The DVI-D format is used for direct digital connection between source video and digital LCD monitors or projectors. The digital v...