This listing is for a Constellation ES.2 ST33000650SS 3TB 7.2K 6G 3.5in SAS HDD with tray. This hard drive is compatible with PC and supports HDD drive type(s). It has a silver color and features hot swap and removable capabilities. The interface for this hard drive is SAS and it is a part of the Constellation product line. Perfect for those in need of reliable and spacious storage.