Seagate Constellation ES.3 ST1000NM0033 is a pre-owned 1 TB internal desktop hard drive with a 3.5" form factor and SATA III interface. It has a rotation speed of 7200 RPM and a cache of 128 MB. This hard drive is compatible with PCs and is suitable for enterprise machines. The product line is Constellation and the model is Constellation ES.3. It is a HDD-only storage format and is silver in color. The model number is ST1000NM0033.