P2R7N Dell 10x HDD EXP Mini SAS-a2 to Rear BP Cable for PowerEdge R640

The P2R7N cable is a Dell‑specified Mini SAS‑a2 to rear backplane connector designed specifically for the PowerEdge R640 server. It provides the interface needed to expand the system with up to ten hard‑drive bays, linking the Mini SAS‑a2 ports on the host adapter to the rear backplane that supplies power and data to the drives. As an original Dell part, it matches the mechanical and electrical requirements of the R640 chassis, ensuring reliable connectivity for additional storage without the need for third‑party adapters. This cable is intended for use in data‑center or enterprise environments where precise compatibility with Dell hardware is essential.