Usage Tips:Features: Note: Most hard disk replacement requires replacing BIOS components. Please understand clearly before purchasing. You should swap the BIOS chip before you exchange the PCB board, as our guide sticker shown, in order to make the replacement board compatible for your hard drive; Universal WD-hard disk circuit board; This is just PCB (Printed Circuit Boards), not the whole Hard Drive; All PCBs have been test before shipping; It is used for data recovery/repair issue, the PCB board has been test and in good working conditions. Specifications: Material:PCB Board Number: 2060 771945 002REV A Note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1xPCB Logic Board