The NetApp 3.5 Hard Drive Tray with L3-25232-04B SATA to SAS Interposer is a black caddy unit made of rigid plastic designed for 3.5-inch drives. It is specifically manufactured in China by NetApp, a reputable brand in the market. The unit includes a SAS interface, making it compatible with SAS-compatible drives. This product is ideal for those looking to enhance their storage capabilities with a reliable and compatible drive tray solution.Caddy is in 100% in working order with no issues. will come with 4 screws for HDD mounting