This product is either discontinued or we cannot get that from suppliers.
Qnap CABNIC40G30MQSFP, Data Rate 40 Gb/s, FF QSFP+ DAC, Supply Voltage 3.3V, Length 3 meter, Impedance 100 Ω, Wire Gauge 26 AWG, Connector QSFP+/QSFP+, 40GbE data center switches and Servers.
This Optcore 3-meter 40G QSFP+ DAC copper cable is an ideal replacement for QNAP CAB-NIC40G30M-QSFP. It’s suitable for use with QNAP 40G QSFP+ ports of switches, servers, and adapter cards in data center networks application.