This is a great server disk caddy tray for HP ProLiant server - Comes with 4 screws - Accepts 2.5 inch SATA / SAS HDD - Color: Black This tray is compatible with HP Proliant G8 G9 servers that use 2.5" SAS/SATA hotswap drives. Please make sure that your server uses the 2.5" drive trays before ordering this. This should also fit any other new HP servers that take 2.5" drive trays. Package Includes: - 1 x WALI caddy tray - 4 x screws - 1 x 2.5 inch Hard drive caddy.