SC - "Subscriber/Standard/Square Connector"

• Common connector type
• Locks in place

LC - "Local/Little/Lucent Connecter"

• Smaller and more compact than SC
• Locks in with clip

ST - "Straight Tip"

• Bayonet connector ("stick and twist")

MPO - "Multi-fiber Push On"

• More space efficient, twelve fibers in a single connector
• Locks into place
• Also known as MTP