D-LINK DEM-CB300QXS, 40 Gbps Gigabit Ethernet, Cable Length 3 metres, Wire AWG 30 AWG, Voltage 30 V AC, Current 0.5 A, Connector QSFP+ Cable Assembly. The DEM-CB300QXS is a 3 meter 40GbE Direct Attach Copper (DAC) cable used with the DXS-3600-EM-4QXS module. It has QSFP+ connectors at both ends.