Yes, the Cisco GLC-SX-MMD is a 1000BASE-SX SFP designed for Gigabit Ethernet ports that support Cisco SFP modules. It works with many Cisco Catalyst, Nexus, ASR, ISR, MDS, and ASA platforms listed in the compatibility guide. Always confirm your exact switch or router model and port type before ordering.

This SFP uses multimode fiber only and requires a dual LC/PC connector. It supports 850nm short-wavelength optics, with typical distances up to 220m on 62.5m fiber, 550m on legacy 50m multimode fiber, and up to 1km on laser-optimized OM3/OM4/OM5 multimode fiber.

Installation is simple: insert the hot-swappable GLC-SX-MMD into a compatible SFP port, then connect your LC multimode fiber patch cable. No power-down is usually required. After installation, verify link status and check DOM readings in your Cisco interface commands if needed.