The UCS-HDD300GI2F105 MK3001GRRB CISCO 15K RPM 6Gb/s SFF 2.5" SAS HDD is a high-performance 300 GB internal desktop drive designed for use with PCs, memory vaults, and Macs. With a rotation speed of 15,000 RPM and a cache size of 64 MB, this unit offers fast read speeds of up to 545MB/s. The drive is compatible with SAS and SAS 2 interfaces. Manufactured by Cisco, this silver-colored HDD is part of the Savvio product line and is an ideal choice for those looking for reliable and efficient storage solutions.+++++TESTED++++THEY COME WITH CADDY++++++