The Amphenol FCI 87520-3112ALF is a USB Type-A receptacle, the standard rectangular USB connector found on host devices and cable assemblies. This is the 4-contact version, wired for USB 2.0 data and power — the two outer pins carry the 5V bus and ground, the inner pair handle the D+ and D- differential pair. Rated 3A per contact, the power pins can deliver the standard USB charging current without exceeding the contact temperature rise.
Board lock and shielding
The copper-alloy shield is soldered to ground pads for EMI containment.
