The 894858003 is a standard USB 2.0 Type-A receptacle from the 89485 series, with 4 contacts in a single port.
Rated 1 A per contact. The 750 VAC rating is an isolation rating, not an operating voltage. The right-angle orientation means the PCB footprint needs clearance behind the port for the solder tails.
Board Lock and Mechanical Retention
In a wave-solder or selective-solder process, these keep the connector from lifting during the thermal cycle. They also take the shear load from cable insertion and extraction, which means the 4 signal pins don't bear the mechanical stress.