These 2×48 audio patchbays are wired to 3-Pin EDAC connectors and feature exceptional flexibility with Audio Accessories’ exclusive Quick-Switch™ normalling system, which allows you to set the individual normal and grounds on a per-jack-pair basis. This enables you to full-normal (FN), half-normal (HN), or non-normal (NN) by setting the switches into the appropriate position. Grounding options: isolated, bussed, or grounds vertically strapped (GVS).