This is for one Enterprise Grade HGST PCIe SSD Ultrastar SN260 6.4Tb Solid State Drive – PN HUSMR7664BHP301. I was using this in my homelab to host my VMs in VMware. Fully functional and in great shape! Includes the full height bracket. Form Factor: HHHL (Half-Height/Half-Length). Sector Size: 512 / 512e. Electrical Interface: PCIe – v3.0 – 16GBps. SSD Endurance DWPD: Enterprise Mixed Use / MU.