The product is a lot of 15 HPE 749796-001 Smart Array P440ar SAS controllers by HP. These PCIE cards offer external SAS interfaces and are compatible with HP products. The controllers support RAID levels 0, 1, 5, and 6, making them ideal for managing data storage and redundancy in computer systems. With a unit quantity of 15, this lot provides a reliable and high-performance solution for those in need of additional SAS controllers for their IT infrastructure.