The Low Noise Block known as LNB has many types and their functions.
SINGLE -WAY LNB
A single-way LNB can be used to connect one receiver or decoder at a time because of it’s one output channel which is connected to a line of coaxial cable.
A TWO-WAY OR DUAL LNB
A Two-Way LNB is a type that has two output channels and can connect two decoders or receivers through coaxial cables to show multiple-TV channels in separate TV Sets.
A FOUR-WAY LNB
This is an LNB with four output channels and can connect four different receivers via coaxial cable to different TV sets.
In the same manner this type has 8 output channel, and can be used as such.
Check out our previous post on What is a Low Noise Block