Mini-Gbic Dual Wavelength Single-Mode Lc Module 1310/1550 Pair; The Pair Of Mini-Gbic Single Mode Module Works With Standard Mini-Gbic Slots On Most Switches. The Pair Of Dual Wavelength Single Mode Lc Type Modules Must Be Used Together In Order To Span Distances Up To 10Km (6.2 Miles). Two Modules Are Included, Each With 1X1000Mbps-Lx (Lc Simplex - Type) Mini-Gbic Connector.