ViewSonic offers the best in multiport options. Flexibility is achieved with RGB In 2x ports. Hook up your PC or even a notebook. SV and CV features allow added media options such as DVD, VCR for media rich presentations. RGB out 1x, lets you connect to a second projector or even an LCD for large audience viewing. Along with RS232, RJ45 and USB, ViewSonic Projectors connect you to your viewers.