Businesses who have placed newer gigabit switches in the distribution closet but need to aggregate older Ethernet and Fast Ethernet hubs and switches using 100BASE-FX technology
Businesses running geographically distributed gigabit switching closets up to 2km apart and who do not yet want to run 10-Gigibit links
In situations where gigabit performance is not required, the business is using 50u or 62.5u multimode fiber and needs to run at a distance greater than 550 meters
