This genuine OEM Dell 0K501P PowerEdge power supply backplane has been thoroughly tested and is ready to be installed in your server. It is compatible with the R520, T320, and T420 models.The backplane is designed to ensure efficient power distribution and has been manufactured to the highest standards. It comes from a reputable brand, Dell, and is guaranteed to meet your needs. This power supply backplane is a great investment for your server and will ensure that your system runs smoothly.