Lenovo ThinkSystem SR650/a V4 Rear M.2 RAID B550p-2HS SATA/NVMe Enablement Kit · 4XH7B11661
M.2 boot adapter documented for ThinkSystem SR650 V4. Exact-code selection; confirm compatibility and shipment contents individually. SATA drives: No · NVMe drives: Yes (x1 lane per drive).