THESE ARE SOLD FOR PARTS, NOT WORKING.The HUH721010AL4200 HGST Ultrastar He10 10TB 7200RPM SAS 12Gbps 256MB is a high-performance internal hard disk drive suitable for databases, cloud computing, and servers. With a storage capacity of 10TB and a cache size of 256MB, this drive offers fast read speeds of up to 560MB/s and a transfer rate of 150 Mbps. Utilizing HelioSeal technology and featuring hot plug support and hot swap capabilities, the Ultrastar drive is designed for reliability and efficiency in demanding storage environments. Made by HGST Hitachi, this silver 3.5-inch drive is a top choice for businesses looking for cost-effective and high-quality storage solutions.