Looking for high-efficiency power solutions at an entry-level price? HPE Standard Power Supplies offer an enhanced set of features with options for both redundant and non-redundant power configurations. HPE 550W FIO Power Supply is 80 PLUS Silver-certified (89%)[1] with an enhanced set of features for non-redundant power configurations for ProLiant DL and ML 10/100 Gen9 servers. HPE 900W Gold Redundant AC Power Input Module with Power Backplane can be configured to support power redundancy in HPE ProLiant Gen9 DL and ML 10/100 server series, providing protection against power loss and reducing operating expenses and trapped power capacity with an 80 PLUS Gold efficiency rating up to 92%[1]. HPE 500W FIO Power Supply is 80 PLUS Gold-certified (92%)[1] with an enhanced set of features for non-redundant power configurations for HPE ProLiant DL and ML 10/100 Gen10 server series, as well as HPE ProLiant ML350 Gen10 Server.