Features: Please make sure that our pictures as same as you need.There are some models have different versions. Each product is shipped through the test, we have a special test personnel,please buy it with noworry . Good packing, to ensure the product is perfect Made of high-quality materials, exquisite workmanship, very good quality and long service life. With strict quality control and quality assurance, high safety factors, can be used with peace of mind. Specifications: Material:PCB Type:100664987REV A /100664987REV B Applicable model:For st2000dm001 ST500DM002 ST1000DM003 ST3000DM001 ST2000VX000 st2000vs000 ST3000VX000 Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Hard Drive Circuit Board