HPE 874568-B21 Ml350 Gen10 8sff Hdd Cage Kit, Number of Hard Drives Supported: 8, Number of Total Expansion Bays: 8, Number of 2.5" Bays: 8, Form Factor: Internal, Compatibility: HPE ML110 Gen10 Server. HP E Ml110 Gen10 8SFF Drive Cage Kit Drives (874007-B21) HPE Multi-Output Power Supplies provide lower-cost options for customers needing enterprise class efficiency.