No working FOR PARTS ONLY The product is a lot of 2 10TB Western Digital Ultrastar DC HC510 SATA 6Gb/s 3.5" HDDs, designed for NAS, desktops, and servers. With a rotation speed of 7200 RPM and a read speed of 249MB/s, these enterprise-grade hard drives offer high performance and reliability. They come with a 2-year seller warranty and a helium-sealed design for enhanced efficiency. The drives are perfect for those looking for large storage capacity in a compact form factor, making them an ideal choice for a variety of storage needs.