D-Link DEM-S2810LR 25GBASE-LR Single-Mode SFP28 Optical Transceiver Sale Price Price $261.50 Free Shipping
D-Link DEM-QX10Q-LR4 40GBASE-LR4 QSFP+ 10 km Single-Mode Transceiver Sale Price Price $4,560.99 Free Shipping
Available Options D-Link DEM-310GT 1000BASE-LX Single-Mode Optical Transceiver, 0 to 70C Sale Price Price $23.78 Free Shipping
Available Options D-Link DEM-311GT 1000BASE-SX Multimode SFP Optical Transceiver, 0 to 70C Sale Price Price $23.77 Free Shipping