Seagate ST3000NM0063 Constellation ES.3 3TB 6.0Gb/s 3.5" SAS internal hard drive, 128MB cache, 7200 rpm, Self-Encrypted Drive (SED) FIPS 140-2 standard compliant. Seagate also makes 2 lesser models of ST3000NM 3TB drives: ST3000NM0023 (standard model), ST3000NM0043 (SED model). This one is top of the line SED model complies with the Federal Information Processing Standard Publication 140-2, (FIPS PUB 140-2), a U.S. government computer security standard used to approve cryptographic components.

This is for server machines and high-end motherboards that supports SAS hard drive protocol, and it absolutely won't work on machines and motherboards that support SATA-I or SATA-II. Date of Manufacture (DoM) 02/2015. Search the exact model number to see that this listing is priced way below others on eBay.

Official Seagate documentation can be download it here: https://www.seagate.com/www-content/product-content/constellation-fam/constellation-es/constellation-es-3/en-us/docs/100671510b.pdf