
Most KVM Extenders transmit keyboard, video and mouse data over CAT5 cable, which is of course generally used for digital network applications. KVM Extender manufacturers choose this cable because it is cheap, readily available, and most industrial users are used to working with it. CAT5 cable is great stuff for all these reasons but has one significant shortcoming: it can be susceptible to EMI (ElectroMagnetic Interference) in electrically noisy environments.