The GLC-SX-MMD is a Cisco 1000BASE-SX SFP (Small Form-Factor Pluggable) transceiver module. It’s designed for Gigabit Ethernet connections over multimode fiber (MMF). This transceiver operates at an 850nm wavelength and supports distances up to 550 meters. It’s commonly used in data centers and enterprise networks for short-range Gigabit Ethernet connectivity. Essentially, the GLC-SX-MMD provides a reliable optical link for Gigabit Ethernet applications over multimode fiber.
