4-406541-8 is a shielded 1x1 inverted modular jack assembly designed for PCB mounting applications. This connector features a configuration without panel grounds and utilizes a narrow post type design for secure board attachment. Key dimensional specifications include an overall width of 15.75±0.25 mm and height dimensions of 17.27±0.25 mm and 16.26±0.25 mm. The jack assembly includes mounting posts with diameters of Ø0.89±0.08 mm and Ø1.57±0.08 mm at specified locations. This modular jack is commonly used in networking and telecommunications equipment where reliable RJ-style connectivity is required.