Fast Ethernet Managed Access Switch The FS980M/52 features 48 x 10/100TX ports and 4 x 100/1000X SFP uplink/stacking ports. CentreCOM FS980M switches are cost-effective, fully managed, and can be stacked for increased resiliency and port density at the edge of the network. As part of an Allied Telesis Management Framework™ (AMF) network, the FS980M switches utilize automated management and zero-touch recovery to lower running costs.