RJ11 (Registered Jack type 11)

• 6 position, 2 conductor (6P2C)
• Telephone & DSL (Digital Subscriber Line) connection

RJ45 (Registered Jack type 45)

• 8 position, 8 conductor (8P8C)
• Ethernet

F-connector

• Used to connect coaxial cable
• Cable modem, cable television
• Also known as DOCSIS connector (Data Over Cable Service Interface Specification)

BNC (Bayonet Neill-Concelman)

• Also used for coaxial cable
• Common for WAN links and video connections