https://www.alobars.com/shop/Cables-Clamps-and-Connectors/Cat5Cat6RJ45/p/AccuCable-ACRJ453PSET-Connector---RJ45-to-3-Pin-XLR-M-and-XLR-F-Set.htm
AccuCable ACRJ453PSET Connector - RJ45 to 3 Pin XLR (M) and XLR (F) Set - 819730012869
AccuCable Data Cable - Pro Grade, Cat 6, RJ45 to 3 Pin XLR (M) and XLR (F)