1 LC 1000Base-SX port(IEEE 802.3z Type 1000Base-SX) Duplex: full only 62.5/125 µm or 50/125 µm (core/cladding) diameter, graded-index, low metal content, multimode fiber optic, complying with ITU-T G.651 and ISO/IEC 793-2 Type A1b or A1a, respectively Maximum distance: 220 m (62.5 µm core diameter, 160 MHz/km bandwidth) 275 m (62.5 µm core diameter, 200 MHz/km bandwidth) 500 m (50 µm core diameter, 400 MHz/km bandwidth) 550 m (50 µm core diameter, 500 MHz/km bandwidth)