The Dell WUS721010AL4200 SAS 3.5" 12Gbps 7.2K RPM Server HD with Caddy is a high-performance internal server hard drive designed specifically for Dell servers. With a storage capacity of 10TB, this HDD offers fast transfer rates at 12Gbps and features hot plug support for easy installation and removal. Made by Dell in the United States, this server hard drive is part of the DELL EMC product line, ensuring reliable and consistent performance for your storage needs. These drive have 35,012 power on hours. Drives tested working pulled from dell sc400