Cisco GLC-SX-MMD SFP ModuleThe Cisco GLC-SX-MMD SFP Module is a high-performance, cost-effective Gigabit Ethernet transceiver designed for short-range data transmission over multimode fiber (MMF). Operating at 850 nm wavelength, it supports distances of up to 550 m on 50 µm MMF and 220 m on 62.5 µm MMF.With Digital Optical Monitoring (DOM), this SFP provides real-time diagnostic data such as optical output power, input power, temperature, and transceiver voltage — helping administrators ensure optimal network health.Hot-swappable and fully compatible with Cisco networking devices, the GLC-SX-MMD offers flexible deployment and effortless maintenance, making it ideal for reliable, high-speed connections in enterprise networks.SpecificationsFeatureDetailsModelCisco GLC-SX-MMDType1000BASE-SX SFP TransceiverData Rate1 GbpsFiber TypeMultimode Fiber (MMF)Wavelength850 nmMaximum DistanceUp to 550 m (50 µm MMF)Connector TypeLC DuplexDigital Optical Monitoring (DOM)SupportedHot-SwappableYesStandardsIEEE 802.3z 1000BASE-SXOperating Temperature0 °C – 70 °CCompatibilityCisco switches, routers, and other SFP-enabled devicesWarrantyCisco Standard WarrantyCisco GLC-SX-MMD SFP Module Product PictureOptical module modelGLC-LH-SMDGLC-SX-MMDGLC-ZX-SMOptical module nameCisco GLC-LH-SMD SFP Gigabit optical moduleCisco GLC-SX-MMD SFP Gigabit optical moduleCisco GLC-ZX-SM SFP Gigabit optical modulePackage TypeSFPSFPSFPRate1000Mbps1000Mbps1000MbpsCenter wavelength1310nm850nm1550nmInterfaceDuplex LCDuplex LCDuplex LCFiber TypeMMF/SMFMMFSMFTransmission distance10km550m70kmTransmit optical power-9～-3dBm-9.5～-3dBm0～5dBmReceiving sensitivity<-21dBm<-17dBm<-24dBmDOM FunctionSupportSupportSupportLaser typeFP 1310nmVCSEL 850nmDFB 1550nmCommercial temperature0～70°C0～70°C0～70°CApplication of optical modulesGigabit EthernetGigabit EthernetGigabit Ethernet1000BASE-LXFiber ChannelFiber Channel1000BASE-LH1000BASE-SX1000BASE-ZXCompatible switchesCisco ME 3600Cisco Catalyst 3560Cisco Catalyst 2960Cisco ME 3800Cisco Catalyst 3750Cisco Catalyst 3560Cisco ME 3900Cisco Catalyst Express 500Cisco Catalyst Compact 2960See the package type, speed, interface, and commercial temperature of the three optical modules are the same, but the other aspects are different. For example, we can see from the model. In addition to the “D” in the model of the GLC-ZX-SM optical module, the other two optical modules are available, and the “D” at the end of the model represents DOM work.From GLC-LH-SMD, GLC-SX-MMD, and GLC-ZX-SM optical modules. We can Quick linksCisco GLC-LH-SMD Compatible SFP Module 1GbE Single Mode Fiber Optic TransceiverMikrotik S-85DLC05D is a 1.25G SFP transceiver with a 850nm Dual LC connector, for up to 550 meter Multi Mode fiberCiena DWDM-SFP10G-42.94-80 Compatible 10G DWDM SFP 100GHz Transceiver Module (SMF, 1542.94nm, 80km, LC, DOM)Fibre adapter LC Duplex8 Port Fiber Tray with LC Duplex Adapters
