GLC-SX-MMD

The GLC-SX-MMD 1000BASE-SX SFP is made for Multimode Fiber only.
The 1000BASE-SX SFP, compatible with the IEEE 802.3z 1000BASE-SX standard, operates on legacy 50 μm multimode fiber links up to 550 m and on 62.5 μm Fiber Distributed Data Interface (FDDI)-grade multimode fibers up to 220 m. It can support up to 1km over laser-optimized 50 μm multimode fiber cable. 850-nm wavelength, extended operating temperature range and DOM support, dual LC/PC connector.
The table provides cabling specifications for the SFPs that you install in the Gigabit Ethernet port.
Note that all SFP ports have LC-type connectors, and the minimum cable distance for all SFPs listed (multimode and single-mode fiber) is 6.5 feet (2 m).
SFP Port Cabling Specifications
Product Wavelength (nm) Fiber Type Core Size (μm) Modal Bandwidth (MHz* Km)*** Operating Distance (m) 1000BASE-SX (GLC-SX-MMD) 850 MMF 62.5 160 (FDDI-grade) 220 (722 ft) 62.5 200 (OM1) 275 (902 ft) 50 400 (400/400) 500 (1,640 ft) 50 500 (OM2) 550 (1,804 ft) 50 2000 (OM3) 1000 (3281 ft) 1000BASE-LX/LH (GLC-LH-SMD) 1310 MMF* 62.5 500 550 (1,804 ft) 50 400 550 (1,804 ft) 50 500 550 (1,804 ft) SMF -** - 10,000 (32,821 ft) 1000BASE-EX 1310 SMF -** - 40,000 (131,234 ft) 1000BASE-ZX (GLC-ZX-SM ) (GLC-ZX-SMD ) 1550 SMF - - Approximately 70 km depending on link loss 1000BASE-BX-U 1310 SMF -** - 10,000 (32,821 ft) 1000BASE-BX-D 1490 SMF -** - 10,000 (32,821 ft)
*A mode-conditioning patch cord, as specified by the IEEE standard, is required regardless of the span length. Note how the mode conditioning patch cord for 62.5-μm fibers has a different specification from the mode-conditioning patch cord for 50-μm fibers.
**ITU-T G.652 SMF as specified by the IEEE 802.3z standard.
***Specified at transmission wavelength.