Standards: IEEE 802.3 Ethernet, 10Base-T
IEEE 802.3u Fast Ethernet, 100Base-TX, 100Base-FX
IEEE 802.3x Full-duplex flow control
Primary Ports: 4 x port 10/100Base-TX RJ-45 with auto MDI / MDI-X function for ISW-511T series
1 x port 100Base-FX interface on ISW-511TS15 for up to 15km (single-mode fiber 9/125µm) transmission distance