Physical Interconnection and Speed

Wire Types:

• Shielded Twisted Pair - STP
• Unshielded Twisted Pair - UTP
• 1-pair send / 1-pair receive

Connectors:

• (STP) IBM Data Connector, Hermaphroditic
  ("Boy George"); Type 1; or TDC-1
• (UTP) RJ-45 Phone Jack

STP with IBM Type 1 Connector	UTP with RJ-45 Connector