Bittree B96DC-FNRSS/E3 M2OU12B 1 RU High-density Patchbay 2x48 jack configuration with mono (even) jack spacing with selectable normalling and grounding - Circuits can be easily changed via shunts under both top and bottom dust covers. Digital AES wire used for internal wiring and 1-48 left-to-right numbering on front panel for easy circuit identification.