IBM 69Y5284 3.5" SAS SATA Drive Tray Caddy for x3500 x3530 M4 for IBM System x3500 M4 Works with the Part Number: 69Y5284 Works with IBM System x3300 M4 Works with IBM System x3500 M4, IBM System x3530 M4, IBM System x3550 M4 Works with IBM System x3630 M4, IBM System x3650 M4