Siemens Scalance X Plug-in transceiver, 1x 100 Mbit/s, LC portProduct Overview The Siemens 6GK5991 1AD00 8AA0 is the Siemens SCALANCE X plug in transceiver module SFP991 1. It provides a 100 Mbit s multimode fibre optic interface with an LC port, enabling fibre optic network connections for industrial Ethernet and PROFINET systems useful for long distance or electromagnetically noisy environments. Key Features Fibre optic SFP transceiver module (SFP991 1) Single LC port, multimode fibre interface 100 Mbit s data