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).

Categories: ,


ProductWavelength (nm)Fiber TypeCore Size (μm)Modal Bandwidth (MHz* Km)***Operating Distance (m)
1000BASE-SX850MMF62.5160 (FDDI-grade)220 (722 ft)
62.5200 (OM1)275 (902 ft)
50400 (400/400)500 (1,640 ft)
50500 (OM2)550 (1,804 ft)
502000 (OM3)1000 (3281 ft)
1000BASE-LX/LH1310MMF*62.5500550 (1,804 ft)
50400550 (1,804 ft)
50500550 (1,804 ft)
SMF-**10,000 (32,821 ft)
1000BASE-EX1310SMF-**40,000 (131,234 ft)


1550SMFApproximately 70 km depending on link loss
1000BASE-BX-U1310SMF-**10,000 (32,821 ft)
1000BASE-BX-D1490SMF-**10,000 (32,821 ft)

Brand info