B Series Chassis Mount XLR Connectors. Due to new tooling and mold requirements the part numbers referenced below have undergone several changes. This will be a rolling change and exact dates of the change are not available. These changes do not affect the form, fit, or functionality. The panel cut-out and PCB layout are not changed and remain the same. In addition,all part numbers remain the same. After the first shipment of the new version only new items will be supplied, no stock will be maintained of the old version. Please see the attached ECN from Neutrik with more details regarding the changes and improvements made to the B series Chassis Mount XLR Connectors including images detailing the differences. Affected Parts MFR PN Mouser PN NC3FBH1 568-NC3FBH-1 NC3FBH1-B 568-NC3FBH-1-B NC3FBH1-0 568-NC3FBH1-0 NC3FBH2 568-NC3FBH-2 NC3FBH2-B 568-NC3FBH-2B NC3FBH2-0 568-NC3FBH-2-0 NC3FBV1 568-NC3FBV-1 NC3FBV1-B 568-NC3FBV1-B NC3FBV1-0 568-NC3FBV1-0 NC3FBV2 568-NC3FBV-2 NC3FBV2-B 568-NC3FBV2-B NC3FBV2-0 568-NC3FBV2-0 NC3MBH 568-NC3MBH NC3MBH-B 568-NC3MBH-B NC3MBV 568-NC3MBV NC3MBV-B 568-NC3MBV-B 5-0812-18