Fiber: MMF, SMF. 10000m (32,821 ft) @ SMF. The hot-swappable input/output device plugs into a Gigabit Ethernet port or slot. 1000BASE-LX/LH SFP for both multimode and single-mode fibres. The 1000BASE-LX/LH SFP, compatible with the IEEE 802.3z 1000BASE-LX standard, operates on standard single-mode fibre-optic link spans of up to 10 km and up to 550 m on any multimode fibres.