Tested and working. Specifically for servers not desktops. Sold as is. The HGST 4TB SAS Drive for servers is a high-performance internal desktop drive designed for use in servers. With a storage capacity of 4TB and a rotation speed of 7200 RPM, this silver-colored drive offers fast data transfer rates and reliable storage for large amounts of data. The drive is compatible with PCs and features a form factor of 3.5 inches, making it a standard size for desktop setups. Its hot swap capability allows for easy maintenance and replacement, while the SAS interface ensures efficient data processing. Ideal for businesses and individuals looking for a dependable and high-capacity storage solution.