Networking and Connector Types Lecture

RJ11 Connector

• Usage: Traditional analog telephones, DSL networks
• Description:
  • Six-position, two-conductor connector
  • Can have up to six positions and four conductors
• Applications: Phone connections, DSL modems

RJ45 Connector

• Usage: Ethernet connections
• Description:
  • Eight-position, eight-conductor connector
• Applications: Ethernet, other network types
• Comparison:
  • Smaller RJ11 vs. larger RJ45
  • Example: Both used on a DSL modem (RJ11 for DSL, RJ45 for LAN)

F Connector

• Usage: Cable television and internet
• Description:
  • Threaded connection for coaxial cable
• Applications: Cable TV, Cable internet (DOCSIS standard)
• Example: Male F connector connecting to female connector on a cable modem

Punch Down Blocks

• Usage: Data centers, large computer rooms
• Description:
  • Wires punched into a block for network connections
  • Connector added on top or other side of block
• Example: Close-up view of wiring block
  • Permanent attachment for easier wire management
• Applications: Wired connections in a data center
• Tool: Punch down tool to connect wires

USB Connectors

• Types:
  • USB 1.1/2.0: Standard A, Standard B, Mini B, Micro B
  • USB 3.0: Newer Standard B, Micro B with higher speeds
  • USB-C: Double-sided, smaller than Micro B, used for peripherals, computers, and more
• Features: Higher speeds, additional pins for USB 3.0, multi-functionality for USB-C

Molex Connector

• Usage: Providing power inside computers
• Description:
  • 4-pin power connector
  • Provides 12V and 5V power
• Applications: Powering hard drives, optical drives, fans

Lightning Connector

• Usage: Apple devices (iPhones, iPads)
• Description:
  • 8-pin connector
  • Allows for additional power output
  • Reversible (no top or bottom)
• Comparison: Unlike micro USB, it can be plugged in either orientation

DB9 Connector

• Usage: Infrastructure devices, serial connections
• Description:
  • D-sub miniature connector, size B, supports nine pins
• Applications: Originally for modems, currently for switches, routers in data centers
• Example: Fiber switch with DB9 serial console for command line management