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Figure6: st and sc connectors, Straight tip connectors – Allied Telesis AT-MR912TX User Manual

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AT-MR912TX Hub Installation Manual

9

Figure 6 shows a generic illustration of both types of connectors.

Figure 6: ST and SC Connectors

Straight Tip Connectors

Straight Tip connectors mate through a two-pin, bayonet-style interface.

They are popular simply because they have less attenuation and less
vulnerability to human error than previous fiber optic connectors such as a
Sub Miniature Assembly (SMA).

On the other hand, if your existing (usually older) networking environment
uses SMA (or Biconic) connectors, a commercially available ST-SMA hybrid
cable allows easy conversion from one type of connector to the other. This cable
is a one-meter duplex fiber optic cable with ST connectors on one end and SMA
connectors on the other.