This is a dual port SFF-8088 to dual port SFF-8087 converter / adapter PCIe bracket. Comes with both full profile and low profile brackets included. If you're building a JBOD or drive enclosure, and you need to connect an external cable to your enclosure chassis and convert it into internal ports, this is the bracket you need. Mount it on your chassis PCI bracket slot, connect the external cables, and then connect the internal cables. This also ensures your external cable shielding is properly grounded to the chassis and to your PSU. Fits in both full profile standard cases, as well as low profile cases.
Please feel free to ask any questions before you order. If you need help choosing the parts you need to build out your drive enclosure, I have many YouTube videos that can help you. Just look up my channel "The ART of SERVER" on YouTube! :-)