The generic compatible 40G QSFP+ Passive Direct Attach Copper Twinax Cable is designed for use in 40GBASE Ethernet in short-distance connectivity within a rack or between adjacent racks in data centers. The Passive Direct Attach Cable offers a 40GBASE Ethernet network connection with low latency, and low power consumption.Generic compatible, not compatible with Aruba/HPE & Cisco without CLI command to allow 3rd party SFP transceivers.