For sale: Original Cisco SFP Transceiver module. Model: Cisco GLC-SX-MMD Condition: • New and unused. • Original from Cisco. • In excellent condition. Specifications: • 1Gbps speed • Multi-Mode Fiber (MMF) • 850nm wavelength • LC Duplex port • Supports distances up to 550 meters depending on fiber type. Compatible with Cisco switches that support 1Gb SFP ports. Inspection available for serious buyers.