Dual fiber modules use two fibers. They are easier to set up and give steady communication. Single-mode optical modules are best for long distances and fast speeds. They use a thin fiber. Compact, high-density, and standardized, MPO brings order to chaos by consolidating many fibers into a single plug. Among their many features, the number of fiber cores directly affects data capacity and network performance. This article. • Fiber optic cables commonly come in multiples of 2 fiber increments, such as 6, 12, 24, 48, 72 and 144 fiber configurations.