RJ45 Jack for Shielded Ethernet — 8P8C, R/A, EMI Finger
It carries two ports in a single row, with a board guide to align the connector during assembly.
Shielding and EMI Finger — Why It Matters for Signal Integrity
The integrated EMI finger and overall shielding mean this jack bleeds common-mode noise and radiated emissions to the chassis ground before they reach the PHY. For a Cat4-rated component, that shielding is what keeps the link stable in electrically noisy environments — think factory floor near VFDs, or a telecom cabinet sharing a backplane with switching power supplies. The tab faces down, which orients the shielded shell toward the PCB ground plane for a low-impedance drain path.