D-Link DEM-QX10Q-LR4...
€2,129.90
Price
D-Link DEM-QX10Q-LR4, 40000 Mbit/s, QSFP+, LC, IEEE 802.3ba, LR4, Fiber optic
40G BASE-LR4, Single-mode, 10km, QSFP+
40G BASE-LR4, Single-mode, 10km, QSFP+