"Analog video presents a high quality image when the computer is directly connected to the monitor by short cables. However, in today’s data centers, labs, stores, as well as in digital signage installalations, video cables may be long, bulky, and expensive. To overcome these practical video cable length limits, KVM switches—in addition to both KVM extenders and VGA-only extenders—are used that send video through Cat 5e cables. ""Skew"" is the color phase and time errors that occur when R/G/B video signals are sent long distance over Cat 5e cables, and this can result in smeared, unsharp, color-fringed images that become visibly worse the longer the cables."