TE Connectivity 5520259-4 is a single-port 8P8C (RJ45) modular jack for vertical through-hole mounting. It features an unshielded design with gold-plated phosphor bronze contacts and is rated for Category 3 applications.
TE Connectivity 5556416-1 is a vertical unshielded modular jack connector with 8p8c (RJ45) configuration, through hole mounting, and gold-plated phosphor bronze contacts.
TE Connectivity 5569284-1 is a through-hole modular jack connector with 8 positions (8p8c, RJ45, Ethernet), vertical orientation, and unshielded design. It is rated Cat3 and includes a board lock feature.