VGA (Video Graphics Array) is a basic standard for color resolution in computer monitors that, today, represents the lowest common denominator for compatibility. For example, when a computer boots into the Microsoft Windows operating system, the opening splash screen or Windows logo is presented in VGA mode using a palette of 32 colors and a resolution of 640 x 480. Once the system is fully loaded, the video card's device driver takes over at a higher resolution.

1.  Make sure you have a satellite-grade splitter. Many of the common splitters designed for cable TV and other formats will not work in splitting a satellite TV signal. Consult an expert at your electronics store to find a splitter that will work with your satellite service.
2. Attach the splitter to the cable directly connected to the satellite dish outside (the cable that comes out of the wall). You must connect this cable to the splitter port that says "IN" or "SAT IN." Make sure you have the right splitter for the number of units you are connecting.
3. Get a simple two-way splitter if you're linking only two receiver boxes. On this splitter, the "IN" port for the dish cable should be the single port on one side. The two ports on the other side connect to your two receiver boxes.
4. Look for a four-way splitter if you need to connect more than two boxes. This splitter has five coaxial ports, and the "IN" port should be the middle one on the side that has three ports. The other four connect to your receivers.
5. Use a four-way multiswitch if you are linking satellite dishes with separate low-noise blockers, or if you want to attach an antenna for your local air channels. On the side with three ports, the dish(es) connect to any of the two end ports while an antenna connects to the middle one. The four ports on the other side are for the receivers.

No, it is easy to install. You can reference to instruction.